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HIGHLIGHTED ARTICLES

Revealing the phase diagram of Kitaev materials by machine learning: Cooperation and competition between spin liquids

Ke Liu (刘科 子竞), Nicolas Sadoune, Nihal Rao, Jonas Greitemann, and Lode Pollet

Phys. Rev. Research 3, 023016 (2021) - Published 5 April, 2021

The authors propose an unsupervised and interpretable machine learning scheme and apply it to uncover properties in Kitaev materials.

Statistics of coherent waves inside media with Lévy disorder

Luis A. Razo-López, Azriel Z. Genack, and Victor A. Gopar

Phys. Rev. Research 3, 023035 (2021) - Published 9 April, 2021

This paper characterizes rhe spread of coherent waves in systems with large structural fluctuations in terms of the nature of the disorder and average logarithm of ‎transmission.

Determining urban material activities with a vehicle-based multi-sensor system

M. Salathe, B. J. Quiter, M. S. Bandstra, J. C. Curtis, R. Meyer, and C. H. Chow

Phys. Rev. Research 3, 023070 (2021) - Published 23 April, 2021

The authors describe methods of estimating the naturally occurring radioactivity present in an urban environment based on a vehicle-borne measurement system comprising an array of NaI(Tl) detectors, LiDAR systems, and panoramic cameras.

Machine learning time-local generators of open quantum dynamics

Paolo P. Mazza, Dominik Zietlow, Federico Carollo, Sabine Andergassen, Georg Martius, and Igor Lesanovsky

Phys. Rev. Research 3, 023084 (2021) - Published 30 April, 2021

This work shows how neural networks can learn the dynamical generator of the time-evolution of local degrees of freedom in many-body systems.

Spectral Lyapunov exponents in chaotic and localized many-body quantum systems

Amos Chan, Andrea De Luca, and J. T. Chalker

Phys. Rev. Research 3, 023118 (2021) - Published 14 May, 2021

The authors analyze the spectral statistics of many-body quantum chaotic and many-body localized systems, by associating a given Floquet quantum circuit with a dual transfer matrix product, which is characterized by a spectrum of Lyapunov exponents.

Simulation of memristive synapses and neuromorphic computing on a quantum computer

Ying Li

Phys. Rev. Research 3, 023146 (2021) - Published 26 May, 2021

This paper proposes a quantum gate that demonstrates memristive behavior, and this gate can be used to simulate synapses and build a quantum neural network.

Neutron-state entanglement with overlapping paths

S. J. Kuhn, S. McKay, J. Shen, N. Geerits, R. M. Dalgliesh, E. Dees, A. A. M. Irfan, F. Li, S. Lu, V. Vangelista, D. V. Baxter, G. Ortiz, S. R. Parnell, W. M. Snow, and R. Pynn

Phys. Rev. Research 3, 023227 (2021) - Published 22 June, 2021

The authors demonstrate that the spin and path subsystems of individual neutrons in a beam can be mode-entangled with nanometer separations between paths.

Spin coherent manipulation in Josephson weak links

Javier Cerrillo, M. Hays, V. Fatemi, and Alfredo Levy Yeyati

Phys. Rev. Research 3, L022012 (2021) - Published 11 May, 2021

The authors propose a protocol based on stimulated Raman adiabatic passage to coherently manipulate the spin degrees of freedom of quasiparticles trapped in the subgap states in a spin-orbit coupled Josephson weak link.

LETTERS

Antiresonance in switched systems with only unstable modes

Maurizio Porfiri, Russell Jeter, and Igor Belykh

Phys. Rev. Research 3, L022001 (2021) - Published 1 April, 2021

The authors report the emergence of antiresonance in a variation of the Stuart-Landau model, which alternates between two unstable modes but displays a stable response in a finite range of switching frequencies.

Deep reinforcement learning for feedback control in a collective flashing ratchet

Dong-Kyum Kim and Hawoong Jeong

Phys. Rev. Research 3, L022002 (2021) - Published 2 April, 2021

The authors use a deep reinforcement learning framework to obtain optimal policies for maximizing the current in a collective flashing ratchet.

Correlation between electronic and structural orders in 1TTiSe2

Hiroki Ueda, Michael Porer, José R. L. Mardegan, Sergii Parchenko, Namrata Gurung, Federica Fabrizi, Mahesh Ramakrishnan, Larissa Boie, Martin Josef Neugebauer, Bulat Burganov, Max Burian, Steven Lee Johnson, Kai Rossnagel, and Urs Staub

Phys. Rev. Research 3, L022003 (2021) - Published 5 April, 2021

The authors find an onset of Se out of plane displacements that correlate to the transport and other electronic properties changes deep in the charge density wave phase.

Large response of charge stripes to uniaxial stress in La1.475Nd0.4Sr0.125CuO4

T. J. Boyle, M. Walker, A. Ruiz, E. Schierle, Z. Zhao, F. Boschini, R. Sutarto, T. D. Boyko, W. Moore, N. Tamura, F. He, E. Weschke, A. Gozar, W. Peng, A. C. Komarek, A. Damascelli, C. Schüßler-Langeheine, A. Frano, E. H. da Silva Neto, and S. Blanco-Canosa

Phys. Rev. Research 3, L022004 (2021) - Published 9 April, 2021

The authors measure the effects of uniaxial tensile-stress on a prototypical stripe-ordered cuprate, showing that a modest amount of stress creates large changes in the phase diagram.

Enhancement of proximity-induced superconductivity in a planar Ge hole gas

Kushagra Aggarwal, Andrea Hofmann, Daniel Jirovec, Ivan Prieto, Amir Sammak, Marc Botifoll, Sara Martí-Sánchez, Menno Veldhorst, Jordi Arbiol, Giordano Scappucci, Jeroen Danon, and Georgios Katsaros

Phys. Rev. Research 3, L022005 (2021) - Published 15 April, 2021

The authors use bilayer superconducting electrodes to proximitize two-dimensional hole gas in germanium and demonstrate increased superconducting properties compared to solely aluminium based devices.

Maxwell's demon-like nonreciprocity by non-Hermitian gyrotropic metasurfaces

Wenyan Wang, Wang Tat Yau, Yanxia Cui, Jin Wang, and Kin Hung Fung

Phys. Rev. Research 3, L022006 (2021) - Published 19 April, 2021

The authors propose a non-Hermitian metasurface that functions as a photonic Maxwell’s demon, which is a variation of Maxwell’s demon which controls photons instead of gas particles.

Casimir-cavity-induced conductance changes

Garret Moddel, Ayendra Weerakkody, David Doroski, and Dylan Bartusiak

Phys. Rev. Research 3, L022007 (2021) - Published 20 April, 2021

The authors show the effect of adjoining a Casimir cavity to one side of metal/insulator/metal device on its conductance, as a consequence of modifying a balance in injection of hot electrons excited by zero-point fluctuations.

Self-assembly in soft matter with multiple length scales

Alberto Scacchi, Sousa Javan Nikkhah, Maria Sammalkorpi, and Tapio Ala-Nissila

Phys. Rev. Research 3, L022008 (2021) - Published 23 April, 2021

The authors identify guidelines for spontaneous self-assembly of soft matter involving multiple length scales.

Controlling exciton many-body states by the electric-field effect in monolayer MoS2

J. Klein, A. Hötger, M. Florian, A. Steinhoff, A. Delhomme, T. Taniguchi, K. Watanabe, F. Jahnke, A. W. Holleitner, M. Potemski, C. Faugeras, J. J. Finley, and A. V. Stier

Phys. Rev. Research 3, L022009 (2021) - Published 30 April, 2021

The authors study the evolution of the valley Zeeman splitting in monolayer MoS2 as a function of charge doping and find that the excitons are many-body states away from charge neutrality.

Transitions of turbulent superstructures in generalized Kolmogorov flow

Cristian C. Lalescu and Michael Wilczek

Phys. Rev. Research 3, L022010 (2021) - Published 5 May, 2021

The authors show that generalized Kolmogorov flow exhibits a variety of turbulent superstructures which leave an imprint on small-scale turbulence.

Dynamically induced magnetism in KTaO3

R. Matthias Geilhufe, Vladimir Juričić, Stefano Bonetti, Jian-Xin Zhu, and Alexander V. Balatsky

Phys. Rev. Research 3, L022011 (2021) - Published 10 May, 2021

The authors estimate the magnetization dynamically induced by oscillating dipole moments in the nominally nonmagnetic quantum paraelectric material KTaO3, exposed to an external THz laser pulse.

Spin coherent manipulation in Josephson weak links

Javier Cerrillo, M. Hays, V. Fatemi, and Alfredo Levy Yeyati

Phys. Rev. Research 3, L022012 (2021) - Published 11 May, 2021

The authors propose a protocol based on stimulated Raman adiabatic passage to coherently manipulate the spin degrees of freedom of quasiparticles trapped in the subgap states in a spin-orbit coupled Josephson weak link.

Berry bands and pseudo-spin of topological photonic phases

Samuel J. Palmer and Vincenzo Giannini

Phys. Rev. Research 3, L022013 (2021) - Published 18 May, 2021

The authors introduce bands of Berry curvature as a pseudo-spin basis in topological photonics.

Prediction of pseudogap formation due to d-wave bond-order in organic superconductor κ(BEDT-TTF)2X

Rina Tazai, Youichi Yamakawa, Masahisa Tsuchiizu, and Hiroshi Kontani

Phys. Rev. Research 3, L022014 (2021) - Published 19 May, 2021

The authors propose the emergence of d-wave smectic bond order in organic superconductor κ-(BEDT-TTF)2X due to the paramagnon interference mechanism.

Thermal pure quantum matrix product states recovering a volume law entanglement

Atsushi Iwaki, Akira Shimizu, and Chisa Hotta

Phys. Rev. Research 3, L022015 (2021) - Published 25 May, 2021

The authors construct a thermal pure matrix product state with edge auxiliaries that shows volume law entanglement at low temperature.

Formation of compact objects at finite temperatures in a dark-matter-candidate self-gravitating bosonic system

Akhilesh Kumar Verma, Rahul Pandit, and Marc E. Brachet

Phys. Rev. Research 3, L022016 (2021) - Published 27 May, 2021

The authors propose to use the Galerkin-truncated Gross-Pitaevskii-Poisson equation to model dark-matter-candidate bosonic assemblies at finite temperatures.

Collisionless drag for a one-dimensional two-component Bose-Hubbard model

Daniele Contessi, Donato Romito, Matteo Rizzi, and Alessio Recati

Phys. Rev. Research 3, L022017 (2021) - Published 28 May, 2021

The authors study a one-dimensional two-component Bose-Hubbard ring by means of tensor network methods and provide numerical evidence of the Andreev-Bashkin collisionless superfluid drag and its sensible increase close to the pair-superfluid onset.

Toolbox for quantifying memory in dynamics along reaction coordinates

Alessio Lapolla and Aljaž Godec

Phys. Rev. Research 3, L022018 (2021) - Published 28 May, 2021

The authors present a pair of easy-to-use model-free methods for determining the magnitude and duration of memory in experimental time-series derived, for example, from single-molecule experiments or molecular dynamics simulations.

Chaotic switching for quantum coin Parrondo's games with application to encryption

Joel Weijia Lai and Kang Hao Cheong

Phys. Rev. Research 3, L022019 (2021) - Published 2 June, 2021

The authors show that chaotic switching between two losing quantum coin toss for a quantum walker can result in a larger win margin than random switching.

Characterizing the dynamical phase diagram of the Dicke model via classical and quantum probes

R. J. Lewis-Swan, S. R. Muleady, D. Barberena, J. J. Bollinger, and A. M. Rey

Phys. Rev. Research 3, L022020 (2021) - Published 4 June, 2021

The paper shows that the quench dynamics of an ensemble of spins coupled to a single bosonic oscillator features classical and quantum dynamical critical points.

Ultrafast x-ray imaging of pulsed plasmas in water

Christopher Campbell, Xin Tang, Yancey Sechrest, Kamel Fezzaa, Zhehui Wang, and David Staack

Phys. Rev. Research 3, L022021 (2021) - Published 8 June, 2021

The authors present ultrafast phase-contrast X-ray imaging of nanosecond-pulsed plasma phenomena in water.

Synthetic gravitational horizons in low-dimensional quantum matter

Corentin Morice, Ali G. Moghaddam, Dmitry Chernyavsky, Jasper van Wezel, and Jeroen van den Brink

Phys. Rev. Research 3, L022022 (2021) - Published 9 June, 2021

The authors show that electrons in a particular lattice model behave the same way as relativistic particles near a black hole horizon.

Symmetry violation of quantum multifractality: Gaussian fluctuations versus algebraic localization

A. M. Bilen, B. Georgeot, O. Giraud, G. Lemarié, and I. García-Mata

Phys. Rev. Research 3, L022023 (2021) - Published 11 June, 2021

The authors study symmetry in the spectrum of anomalous multifractal dimensions and show that its absence signals the existence of either random fluctuations at the smallest scales or inhomogeneous large-scale modulations of the eigenstates’ structure in the relevant basis.

Disconnecting a traversable wormhole: Universal quench dynamics in random spin models

Tian-Gang Zhou, Lei Pan, Yu Chen, Pengfei Zhang, and Hui Zhai

Phys. Rev. Research 3, L022024 (2021) - Published 21 June, 2021

This paper provides a unified view of two phenomena observed on quench dynamics of random spin models, with the help of an indirect holographic duality to gravity theory that hosts a traversable wormhole.

Evolution of topological edge modes from honeycomb photonic crystals to triangular-lattice photonic crystals

Jin-Kyu Yang, Yongsop Hwang, and Sang Soon Oh

Phys. Rev. Research 3, L022025 (2021) - Published 21 June, 2021

The authors demonstrate that edge modes can exist at triangular photonic crystal slabs where Berry curvature vanishes, and they experience no reflection at 120 degrees bending as in quantum valley Hall photonic crystals.

Dynamical elastic contact of a rope with the ground

Gregory Kozyreff and Benoît Seron

Phys. Rev. Research 3, L022026 (2021) - Published 21 June, 2021

The authors study the generation of waves along a rope on the ground and show how a combination of resonances and impact mechanics make up the nonlinear mechanical interaction of the rope with its support.

Light beam induced finger instability in a photosensitive liquid crystal cell

Ignacio Andrade-Silva, Marcel G. Clerc, Gregorio Gonzalez-Cortes, and Vincent Odent

Phys. Rev. Research 3, L022027 (2021) - Published 21 June, 2021

The authors show the emergence of finger-like structures, transient foam-like, and labyrinthine textures at the nematic-isotropic interface in a photoisomerization experiment.

Three-body QED test and fifth-force constraint from vibrations and rotations of HD+

M. Germann, S. Patra, J.-Ph. Karr, L. Hilico, V. I. Korobov, E. J. Salumbides, K. S. E. Eikema, W. Ubachs, and J. C. J. Koelemeij

Phys. Rev. Research 3, L022028 (2021) - Published 28 June, 2021

The authors study three-body molecules to rule out deviations from electromagnetism down to the eleventh decimal place.

ARTICLES

Universal Hall conductance scaling in non-Hermitian Chern insulators

Solofo Groenendijk, Thomas L. Schmidt, and Tobias Meng

Phys. Rev. Research 3, 023001 (2021) - Published 1 April, 2021

This work shows how gain and loss give rise to a non-trivial contribution to the Hall conductance of two-dimensional Chern insulators.

Many-body Majorana-like zero modes without gauge symmetry breaking

V. Vadimov, T. Hyart, J. L. Lado, M. Möttönen, and T. Ala-Nissila

Phys. Rev. Research 3, 023002 (2021) - Published 1 April, 2021

The authors show the emergence of robust Majorana-like edge modes in the absence of long-range superconducting order, by solving a many-body quantum system without gauge symmetry breaking.

Transmon in a semi-infinite high-impedance transmission line: Appearance of cavity modes and Rabi oscillations

E. Wiegand, B. Rousseaux, and G. Johansson

Phys. Rev. Research 3, 023003 (2021) - Published 1 April, 2021

The authors investigate the dynamics of an artificial atom coupled to a one-dimensional semi-infinite high-impedance transmission line.

Simulating noisy quantum circuits with matrix product density operators

Song Cheng, Chenfeng Cao, Chao Zhang, Yongxiang Liu, Shi-Yao Hou, Pengxiang Xu, and Bei Zeng

Phys. Rev. Research 3, 023005 (2021) - Published 1 April, 2021

The authors introduce a noisy quantum simulator based on tensor networks to model the noise channels of the circuit.

Open system dynamics from thermodynamic compatibility

Roie Dann and Ronnie Kosloff

Phys. Rev. Research 3, 023006 (2021) - Published 1 April, 2021

The paper uses a thermodynamically axiomatic approach to formulate the general form of the Markovian master equation.

Tunable Majorana corner modes in noncentrosymmetric superconductors: Tunneling spectroscopy and edge imperfections

S. Ikegaya, W. B. Rui, D. Manske, and Andreas P. Schnyder

Phys. Rev. Research 3, 023007 (2021) - Published 2 April, 2021

The authors study how edge imperfections affect the number and tunability of Majorana corner modes appearing in two-dimensional second-order topological superconductors, i.e., in noncentrosymmetric superconductors with in-plane magnetic fields.

Efficient preparation of two-dimensional defect-free atom arrays with near-fewest sorting-atom moves

Cheng Sheng, Jiayi Hou, Xiaodong He, Peng Xu, Kunpeng Wang, Jun Zhuang, Xiao Li, Min Liu, Jin Wang, and Mingsheng Zhan

Phys. Rev. Research 3, 023008 (2021) - Published 2 April, 2021

The authors propose a rearranging-atom algorithm with near-fewest sorting-atom moves for large-scale atom assemblers and apply to the preparation of defect-free atom arrays in compact configurations experimentally.

Single- to many-body crossover of a quantum carpet

Maciej Łebek, Piotr T. Grochowski, and Kazimierz Rzążewski

Phys. Rev. Research 3, 023009 (2021) - Published 2 April, 2021

The authors show how many-atom quantum carpets are woven, while their character changes from single- to many-body due to interatomic interactions.

Generative machine learning with tensor networks: Benchmarks on near-term quantum computers

Michael L. Wall, Matthew R. Abernathy, and Gregory Quiroz

Phys. Rev. Research 3, 023010 (2021) - Published 2 April, 2021

The authors develop a pipeline to train, test, and deploy tensor network-based machine learning models on noisy, intermediate-scale quantum hardware.

Electric polarization as a nonquantized topological response and boundary Luttinger theorem

Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath, and Chong Wang

Phys. Rev. Research 3, 023011 (2021) - Published 2 April, 2021

The authors propose a definition of polarization density in insulators given by a topological response that relates polarization to monopole translations.

Effective point-charge analysis of crystal fields: Application to rare-earth pyrochlores and tripod kagome magnets R3Mg2Sb3O14

Zhiling Dun, Xiaojian Bai, Matthew B. Stone, Haidong Zhou, and Martin Mourigal

Phys. Rev. Research 3, 023012 (2021) - Published 2 April, 2021

The authors describe a method to analyze crystal field excitation spectra using adjustable effective point-charges and apply to two families of materials.

Footprints of impurity quantum phase transitions in quantum Monte Carlo statistics

Vladislav Pokorný and Tomáš Novotný

Phys. Rev. Research 3, 023013 (2021) - Published 2 April, 2021

The authors investigate how the statistics of the expansion order in a quantum Monte Carlo simulation is affected by the presence of a quantum critical point and illustrate these effects on the impurity quantum phase transition in a superconducting quantum dot.

Complex networks with tuneable spectral dimension as a universality playground

Ana P. Millán, Giacomo Gori, Federico Battiston, Tilman Enss, and Nicolò Defenu

Phys. Rev. Research 3, 023015 (2021) - Published 5 April, 2021

The authors study a complex network model whose spectral dimension can be continuously tuned in the range ds[1,+]. The disorder contribution to this dimension mirrors the dependence of the anomalous dimension of the Ising model in fractional dimensions.

Revealing the phase diagram of Kitaev materials by machine learning: Cooperation and competition between spin liquids

Ke Liu (刘科 子竞), Nicolas Sadoune, Nihal Rao, Jonas Greitemann, and Lode Pollet

Phys. Rev. Research 3, 023016 (2021) - Published 5 April, 2021

The authors propose an unsupervised and interpretable machine learning scheme and apply it to uncover properties in Kitaev materials.

Entanglement-free witnessing of quantum incompatibility in a high-dimensional system

Dian Wu, Qi Zhao, Yi-Han Luo, Han-Sen Zhong, Li-Chao Peng, Kai Chen, Peng Xue, Li Li, Nai-Le Liu, Chao-Yang Lu, and Jian-Wei Pan

Phys. Rev. Research 3, 023017 (2021) - Published 6 April, 2021

The authors show an entanglement-free witness of the incompatibility of mutually unbiased measurements in a qutrit photonic system.

Simulation of cryogenic buffer gas beams

Yuiki Takahashi, David Shlivko, Gabriel Woolls, and Nicholas R. Hutzler

Phys. Rev. Research 3, 023018 (2021) - Published 6 April, 2021

The authors combine molecular and fluid flow methods to numerically simulate cryogenic buffer gas beams used for cooling atoms and molecules.

Tight finite-key analysis for generalized high-dimensional quantum key distribution

Rong Wang, Zhen-Qiang Yin, Hang Liu, Shuang Wang, Wei Chen, Guang-Can Guo, and Zheng-Fu Han

Phys. Rev. Research 3, 023019 (2021) - Published 7 April, 2021

This work proposes a tight finite-key analysis suitable for generalized high-dimensional quantum key distribution protocols.

Variational wave functions for Sachdev-Ye-Kitaev models

Arijit Haldar, Omid Tavakol, and Thomas Scaffidi

Phys. Rev. Research 3, 023020 (2021) - Published 7 April, 2021

The authors propose a class of wave functions influenced by quantum chemistry to capture the ground state energy in Sachdev-Ye-Kitaev systems.

Generation of photonic matrix product states with Rydberg atomic arrays

Zhi-Yuan Wei, Daniel Malz, Alejandro González-Tudela, and J. Ignacio Cirac

Phys. Rev. Research 3, 023021 (2021) - Published 7 April, 2021

The authors constructed a protocol using an ordered array of atoms with Rydberg interaction to deterministically generate and distribute large-scale photonic quantum entanglement in free space.

Non-Bloch quench dynamics

Tianyu Li, Jia-Zheng Sun, Yong-Sheng Zhang, and Wei Yi

Phys. Rev. Research 3, 023022 (2021) - Published 7 April, 2021

The authors proposed a dynamic detection scheme of non-Bloch topology in the presence of non-Hermitian skin effects.

Intrinsic mechanism for magnetothermal conductivity oscillations in spin-orbit-coupled nodal superconductors

W. A. Atkinson and A. P. Kampf

Phys. Rev. Research 3, 023023 (2021) - Published 7 April, 2021

The authors show that the thermal conductivity of nodal superconductors in a magnetic field is strongly affected by spin-orbit coupling.

Frame dragging and the Hong-Ou-Mandel dip: Gravitational effects in multiphoton interference

Anthony J. Brady and Stav Haldar

Phys. Rev. Research 3, 023024 (2021) - Published 8 April, 2021

The authors study general relativistic effects in multi-photon quantum interference, for quantum-optical platforms restricted to the earth’s surface.

Dielectric friction, violation of the Stokes-Einstein-Debye relation, and non-Gaussian transport dynamics of dipolar solutes in water

Tuhin Samanta and Dmitry V. Matyushov

Phys. Rev. Research 3, 023025 (2021) - Published 8 April, 2021

The authors explore the coupling between rotations and translations through electrostatic interactions with the medium and show that it leads to non-Gaussian translational dynamics and violation of Stokes-Einstein-Debye relation.

Reconciling ionization energies and band gaps of warm dense matter derived with ab initio simulations and average atom models

G. Massacrier, M. Böhme, J. Vorberger, F. Soubiran, and B. Militzer

Phys. Rev. Research 3, 023026 (2021) - Published 8 April, 2021

The authors show how to modify simple Average Atom models so as to recover at very high pressure or density the results of much heavier ab initio computer simulations.

Oxygen vacancies in strontium titanate: A DFT+DMFT study

Jaime Souto-Casares, Nicola A. Spaldin, and Claude Ederer

Phys. Rev. Research 3, 023027 (2021) - Published 9 April, 2021

The authors study the electron distribution resulting from oxygen vacancies in SrTiO3 within DFT+DMFT, indicating the importance of electron-electron interactions on the vacancy site.

Delayed-choice causal order and nonclassical correlations

Simon Milz, Dominic Jurkschat, Felix A. Pollock, and Kavan Modi

Phys. Rev. Research 3, 023028 (2021) - Published 9 April, 2021

This paper investigates how indefinite causal order arises starting from causally ordered quantum dynamics, and show that quantum entanglement enhances the robustness of such realizations.

Incoherent control of optical signals: Quantum-heat-engine approach

Md. Qutubuddin and Konstantin E. Dorfman

Phys. Rev. Research 3, 023029 (2021) - Published 9 April, 2021

The authors demonstrated that the pump-probe optical signals may operate near the Carnot cycle of a quantum heat engine transferring heat from a pump field to ambient environment extracting work out of the system.

Modeling quantum light-matter interactions in waveguide QED with retardation, nonlinear interactions, and a time-delayed feedback: Matrix product states versus a space-discretized waveguide model

Sofia Arranz Regidor, Gavin Crowder, Howard Carmichael, and Stephen Hughes

Phys. Rev. Research 3, 023030 (2021) - Published 9 April, 2021

The authors present two different methods for modelling non-Markovian quantum light-matter interactions in waveguide QED systems, using matrix products states and a space-discretized model.

Witnesses of coherence and dimension from multiphoton indistinguishability tests

Taira Giordani, Chiara Esposito, Francesco Hoch, Gonzalo Carvacho, Daniel J. Brod, Ernesto F. Galvão, Nicolò Spagnolo, and Fabio Sciarrino

Phys. Rev. Research 3, 023031 (2021) - Published 9 April, 2021

The authors use information from pairwise photonic indistinguishability tests to demonstrate coherence and dimension witnesses.

Lattice dynamics and ultrafast energy flow between electrons, spins, and phonons in a 3d ferromagnet

Daniela Zahn, Florian Jakobs, Yoav William Windsor, Hélène Seiler, Thomas Vasileiadis, Tim A. Butcher, Yingpeng Qi, Dieter Engel, Unai Atxitia, Jan Vorberger, and Ralph Ernstorfer

Phys. Rev. Research 3, 023032 (2021) - Published 9 April, 2021

This work provides a consistent description of the microscopic energy flow during the ultrafast demagnetization of nickel by combining experimental results for the lattice heating with atomistic spin dynamics simulations.

Superballistic electron flow through a point contact in a Ga[Al]As heterostructure

Lev V. Ginzburg, Carolin Gold, Marc P. Röösli, Christian Reichl, Matthias Berl, Werner Wegscheider, Thomas Ihn, and Klaus Ensslin

Phys. Rev. Research 3, 023033 (2021) - Published 9 April, 2021

The authors measure the conductance through point contacts in Ga[al]As heterostructures and find a higher than ballistic conductance and an increase of the conductance with increasing temperature in agreement with a viscous electron transport model.

Learning curves for overparametrized deep neural networks: A field theory perspective

Omry Cohen, Or Malka, and Zohar Ringel

Phys. Rev. Research 3, 023034 (2021) - Published 9 April, 2021

The authors propose a field theory formalism for approximating the learning curves of deep neural networks and test it in the overparametrized learning regime of fully connected networks.

Statistics of coherent waves inside media with Lévy disorder

Luis A. Razo-López, Azriel Z. Genack, and Victor A. Gopar

Phys. Rev. Research 3, 023035 (2021) - Published 9 April, 2021

This paper characterizes rhe spread of coherent waves in systems with large structural fluctuations in terms of the nature of the disorder and average logarithm of ‎transmission.

Cellular Fourier analysis for geometrically disordered materials

Antoine Fruleux and Arezki Boudaoud

Phys. Rev. Research 3, 023036 (2021) - Published 12 April, 2021

The authors propose a cellular Fourier transform to analyze fields defined on geometrically disordered media made up of cell-like domains.

Topological router induced via long-range hopping in a Su-Schrieffer-Heeger chain

Lu Qi, Yu Yan, Yan Xing, Xue-Dong Zhao, Shutian Liu, Wen-Xue Cui, Xue Han, Shou Zhang, and Hong-Fu Wang

Phys. Rev. Research 3, 023037 (2021) - Published 12 April, 2021

The authors show how the long-range hopping added on the \alpha-type sites of the one-dimensional modulated Su-Schrieffer-Heeger chain can support a topological edge channel.

Benchmarking quantum state transfer on quantum devices

Yi-Te Huang, Jhen-Dong Lin, Huan-Yu Ku, and Yueh-Nan Chen

Phys. Rev. Research 3, 023038 (2021) - Published 12 April, 2021

The authors propose a benchmark for non-classical quantum state transfer based on spatiotemporal steering and show a proof of principle experiment on IBM and QuTech devices.

Light-induced topological superconductivity via Floquet interaction engineering

Hossein Dehghani, Mohammad Hafezi, and Pouyan Ghaemi

Phys. Rev. Research 3, 023039 (2021) - Published 13 April, 2021

The authors use Floquet engineering of Coulomb interaction via optical irradiation to show that in hexagonal semiconductors topological superconductivity can be realized under non-equilibrium conditions.

Probing the spin structure of the fractional quantum Hall magnetoroton with polarized Raman scattering

Dung Xuan Nguyen and Dam Thanh Son

Phys. Rev. Research 3, 023040 (2021) - Published 13 April, 2021

The authors derive an effective theory that describes the coupling of the fractional quantum Hall system with photons in resonant Raman scattering experiments.

Wigner negativity in the steady-state output of a Kerr parametric oscillator

Ingrid Strandberg, Göran Johansson, and Fernando Quijandría

Phys. Rev. Research 3, 023041 (2021) - Published 13 April, 2021

The authors propose a quantum optics setup for generating a continuous supply of computationally useful quantum states.

Gate-defined quantum point contact in an InSb two-dimensional electron gas

Zijin Lei, Christian A. Lehner, Erik Cheah, Christopher Mittag, Matija Karalic, Werner Wegscheider, Klaus Ensslin, and Thomas Ihn

Phys. Rev. Research 3, 023042 (2021) - Published 13 April, 2021

The authors investigate an electrostatically-defined quantum point contact in a high-mobility InSb two-dimensional electron gas, and find a plateau in the conductance.

Dark-soliton-like magnetic domain walls in a two-dimensional ferromagnetic superfluid

Xiaoquan Yu and P. B. Blakie

Phys. Rev. Research 3, 023043 (2021) - Published 14 April, 2021

The authors report a new dark soliton-like magnetic domain wall solution for a ferromagnetic spin-1 Bose–Einstein condensate.

Periodically, quasiperiodically, and randomly driven conformal field theories

Xueda Wen, Ruihua Fan, Ashvin Vishwanath, and Yingfei Gu

Phys. Rev. Research 3, 023044 (2021) - Published 14 April, 2021

The authors propose a setup where a periodically/quasiperiodically/randomly driven critical system in (1+1) dimensions can be solved analytically for arbitrary driving time.

Activating hidden teleportation power: Theory and experiment

Jyun-Yi Li, Xiao-Xu Fang, Ting Zhang, Gelo Noel M. Tabia, He Lu, and Yeong-Cherng Liang

Phys. Rev. Research 3, 023045 (2021) - Published 14 April, 2021

The authors show the activation of teleportation power hidden in entangled quantum states using local filtering.

Microwave photon number resolving detector using the topological surface state of superconducting cadmium arsenide

Eric Chatterjee, Wei Pan, and Daniel Soh

Phys. Rev. Research 3, 023046 (2021) - Published 15 April, 2021

The authors propose a microwave photon number detector with single-photon resolution using cadmium arsenide at low temperature, with the graphene-like surface state acting as the absorber and the superconducting bulk as the bolometer.

Electron transport in dual-gated three-layer MoS2

Michele Masseroni, Tim Davatz, Riccardo Pisoni, Folkert K. de Vries, Peter Rickhaus, Takashi Taniguchi, Kenji Watanabe, Vladimir Fal'ko, Thomas Ihn, and Klaus Ensslin

Phys. Rev. Research 3, 023047 (2021) - Published 15 April, 2021

The authors investigate the conduction band of three-layer MoS2 by means of magneto-transport experiments and find the lowest band minima at the K point of the first Brillouin zone.

Scaling dimensions from linearized tensor renormalization group transformations

Xinliang Lyu, RuQing G. Xu, and Naoki Kawashima

Phys. Rev. Research 3, 023048 (2021) - Published 16 April, 2021

This paper shows how to implement a renormalization group prescription to extract scaling dimensions in the context of modern tensor-network-based renormalization group techniques.

Lifshitz point at commensurate melting of chains of Rydberg atoms

Natalia Chepiga and Frédéric Mila

Phys. Rev. Research 3, 023049 (2021) - Published 16 April, 2021

The authors determine the extension of the floating phase in a one-dimensional quantum model of period-3 commensurate melting and argue that it terminates before the Potts point because the Luttinger liquid exponent changes along the boundary to the commensurate phase.

Real-time observation of ultrafast molecular rotation in weakly bound dimers

Jiaqi Zhou, Chaoxiong He, Ming-Ming Liu, Enliang Wang, Shaokui Jia, Alexander Dorn, Xueguang Ren, and Yunquan Liu

Phys. Rev. Research 3, 023050 (2021) - Published 16 April, 2021

The authors report the ultrafast molecular rotation of dicationic acetylene dimers during Coulomb explosion using time-resolved pump-probe experiments and ab-initio molecular dynamics simulations.

Universal quantum gates, artificial neurons, and pattern recognition simulated by LC resonators

Motohiko Ezawa

Phys. Rev. Research 3, 023051 (2021) - Published 16 April, 2021

The authors present a method to construct universal quantum gates by a set of LC resonators.

Transient subdiffusion via disordered quantum walks

Andrea Geraldi, Syamsundar De, Alessandro Laneve, Sonja Barkhofen, Jan Sperling, Paolo Mataloni, and Christine Silberhorn

Phys. Rev. Research 3, 023052 (2021) - Published 16 April, 2021

The authors implement quantum walks with tunable space-time disorder. to study subdiffusive transport phenomena, and provide experimental results on the transition from Anderson-like localization to diffusive spread.

Quantum time dilation in atomic spectra

Piotr T. Grochowski, Alexander R. H. Smith, Andrzej Dragan, and Kacper Dębski

Phys. Rev. Research 3, 023053 (2021) - Published 19 April, 2021

The authors show that signatures of quantum time dilation manifest in spectroscopic experiments, and propose experiments based on this to test relativistic quantum physics

Hubbard model on the Bethe lattice via variational uniform tree states: Metal-insulator transition and a Fermi liquid

Peter Lunts, Antoine Georges, E. Miles Stoudenmire, and Matthew Fishman

Phys. Rev. Research 3, 023054 (2021) - Published 19 April, 2021

The authors develop a variational tensor network algorithm to treat infinite tree lattices, and use it to study the ground state of the Hubbard model on the Bethe lattice.

Microcavity-based generation of full Poincaré beams with arbitrary skyrmion numbers

Wenbo Lin, Yasutomo Ota, Yasuhiko Arakawa, and Satoshi Iwamoto

Phys. Rev. Research 3, 023055 (2021) - Published 19 April, 2021

The authors proposed a scheme for generating optical skyrmion beams using the optical spin-orbit interaction in an optical microcavity.

Topolectric circuits: Theory and construction

Junkai Dong, Vladimir Juričić, and Bitan Roy

Phys. Rev. Research 3, 023056 (2021) - Published 19 April, 2021

This paper shows how to engineer generic topological tight-binding models on classical topolectric circuits by exploiting the Clifford algebra of Hermitian matrices.

Numerical continuum tensor networks in two dimensions

Reza Haghshenas, Zhi-Hao Cui, and Garnet Kin-Lic Chan

Phys. Rev. Research 3, 023057 (2021) - Published 19 April, 2021

This work proposes a tensor-network toolbox to study fermionic continuum models.

Coherence and decoherence in the Harper-Hofstadter model

Q.-Y. Liang, D. Trypogeorgos, A. Valdés-Curiel, J. Tao, M. Zhao, and I. B. Spielman

Phys. Rev. Research 3, 023058 (2021) - Published 19 April, 2021

This paper presents a tube-geometry Harper-Hofstadter model, where coherence is stabilized by quasi-disorder in interferometric experiments akin to Aharonov-Bohm interferometers.

Gaussian continuous tensor network states for simple bosonic field theories

Teresa D. Karanikolaou, Patrick Emonts, and Antoine Tilloy

Phys. Rev. Research 3, 023059 (2021) - Published 19 April, 2021

The authors study a sparsely parameterized class of Gaussian states for quantum field theories that are obtained from the continuous limits of tensor networks.

Elliptical rotation of a bosonic oscillator in ultrastrong waveguide QED

Kazuki Koshino

Phys. Rev. Research 3, 023060 (2021) - Published 19 April, 2021

This work reveals that the counter-rotating terms in light-matter coupling make the phase-space motion of quantum harmonic oscillator elliptical.

Casimir forces in the flatland: Interplay between photoinduced phase transitions and quantum Hall physics

Y. Muniz, C. Farina, and W. J. M. Kort-Kamp

Phys. Rev. Research 3, 023061 (2021) - Published 20 April, 2021

The authors investigate the impact of photoinduced phase transitions and quantum Hall physics in the Casimir effect between topological two-dimensional semiconductors of the graphene family materials.

Critical theory for the breakdown of photon blockade

Jonathan B. Curtis, Igor Boettcher, Jeremy T. Young, Mohammad F. Maghrebi, Howard Carmichael, Alexey V. Gorshkov, and Michael Foss-Feig

Phys. Rev. Research 3, 023062 (2021) - Published 21 April, 2021

The authors study a dissipative phase transition in the single-atom Jaynes-Cummings model subjected to strong drive.

Complex complex landscapes

Jaron Kent-Dobias and Jorge Kurchan

Phys. Rev. Research 3, 023064 (2021) - Published 22 April, 2021

The authors map and classify the critical points of a paradigmatic model with a rugged landscape analytically continued to complex values.

Disentangling the subcycle electron momentum spectrum in strong-field ionization

Nicholas Werby, Adi Natan, Ruaridh Forbes, and Philip H. Bucksbaum

Phys. Rev. Research 3, 023065 (2021) - Published 22 April, 2021

The authors use Fourier filtering techniques to eliminate multicycle interference patterns and reveal underlying subcycle structure in photoelectron momentum distributions produced by strong-field ionized atoms and molecules.

Effect of pressure on the pseudogap and charge density wave phases of the cuprate Nd-LSCO probed by thermopower measurements

A. Gourgout, A. Ataei, M.-E. Boulanger, S. Badoux, S. Thériault, D. Graf, J.-S. Zhou, S. Pyon, T. Takayama, H. Takagi, Nicolas Doiron-Leyraud, and Louis Taillefer

Phys. Rev. Research 3, 023066 (2021) - Published 22 April, 2021

The authors preset measurements of the thermoelectric response of cuprate superconductors that show how their pseudogap and charge-density-wave phase respond to hydrostatic pressure.

Impurity-induced magnetic ordering in Sr2RuO4

Bastian Zinkl and Manfred Sigrist

Phys. Rev. Research 3, 023067 (2021) - Published 23 April, 2021

The authors use a microscopic model to determine the corresponding magnetization pattern around Ti atoms serving as nucleation centers.

Many-body collisional dynamics of impurities injected into a double-well trapped Bose-Einstein condensate

Friethjof Theel, Kevin Keiler, Simeon I. Mistakidis, and Peter Schmelcher

Phys. Rev. Research 3, 023068 (2021) - Published 23 April, 2021

The authors show a myriad of dynamical response regimes ranging from tunneling dynamics to pinning and full reflection of the impurities from their host in Bose-Einstein condensates.

Putative Hall response of the strange metal component in FeSe1xSx

M. Čulo, M. Berben, Y.-T. Hsu, J. Ayres, R. D. H. Hinlopen, S. Kasahara, Y. Matsuda, T. Shibauchi, and N. E. Hussey

Phys. Rev. Research 3, 023069 (2021) - Published 23 April, 2021

The authors show that the Hall response of the electron nematic FeSe1xSx comprises two metal components, one of which shows an anomalous 1/T temperature dependence and peaking near the nematic quantum critical point.

Determining urban material activities with a vehicle-based multi-sensor system

M. Salathe, B. J. Quiter, M. S. Bandstra, J. C. Curtis, R. Meyer, and C. H. Chow

Phys. Rev. Research 3, 023070 (2021) - Published 23 April, 2021

The authors describe methods of estimating the naturally occurring radioactivity present in an urban environment based on a vehicle-borne measurement system comprising an array of NaI(Tl) detectors, LiDAR systems, and panoramic cameras.

Coherent-scattering two-dimensional cooling in levitated cavity optomechanics

Marko Toroš, Uroš Delić, Fagin Hales, and Tania S. Monteiro

Phys. Rev. Research 3, 023071 (2021) - Published 26 April, 2021

The authors show how to control bright/dark modes to achieve efficient two-dimensional cooling and identify a route towards achieving three-dimensional motional ground state.

Toward precise simulations of the coupled ultrafast dynamics of electrons and atomic vibrations in materials

Xiao Tong and Marco Bernardi

Phys. Rev. Research 3, 023072 (2021) - Published 26 April, 2021

The authors develop a quantitative approach to study the coupled ultrafast electron and structural dynamics in materials, and apply to graphene.

Tensor networks contraction and the belief propagation algorithm

R. Alkabetz and I. Arad

Phys. Rev. Research 3, 023073 (2021) - Published 27 April, 2021

The authors show how the belief-propagation algorithm can be used as an approximate tensor-network contraction algorithm, and that is equivalent to the simple-update method from the world of tensor networks.

Speed limit for open systems coupled to general environments

Naoto Shiraishi and Keiji Saito

Phys. Rev. Research 3, 023074 (2021) - Published 27 April, 2021

This paper studies the speed limit for arbitrary quantum open systems and shows the role of energy fluctuations to constrain the speed.

Evidence for a percolative Mott insulator-metal transition in doped Sr2IrO4

Zhixiang Sun, Jose M. Guevara, Steffen Sykora, Ekaterina M. Pärschke, Kaustuv Manna, Andrey Maljuk, Sabine Wurmehl, Jeroen van den Brink, Bernd Büchner, and Christian Hess

Phys. Rev. Research 3, 023075 (2021) - Published 27 April, 2021

The authors measure the local effect of defects on the Mott insulator ground state in Sr2IrO4, and suggest that the insulator-metal transition upon doping demonstrates a percolative nature.

Optical signatures of shear collective modes in strongly interacting Fermi liquids

D. Valentinis

Phys. Rev. Research 3, 023076 (2021) - Published 27 April, 2021

This paper investigates the nonlocal electrodynamic response of three-dimensional Fermi liquids, and how to probe transverse Fermi-surface collective modes in solid-state materials using optical spectroscopy.

Uncertainty principle of quantum processes

Yunlong Xiao, Kuntal Sengupta, Siren Yang, and Gilad Gour

Phys. Rev. Research 3, 023077 (2021) - Published 28 April, 2021

The authors show that the uncertainty principle impose also a limitation on the dynamics of physical systems.

Non-Markovian effect on quantum Otto engine: Role of system-reservoir interaction

Yuji Shirai, Kazunari Hashimoto, Ryuta Tezuka, Chikako Uchiyama, and Naomichi Hatano

Phys. Rev. Research 3, 023078 (2021) - Published 28 April, 2021

The authors analyze a quantum heat engine by computing the dynamics under the interactions between the working substance and the heat baths.

Gauge freedom, quantum measurements, and time-dependent interactions in cavity QED

Alessio Settineri, Omar Di Stefano, David Zueco, Stephen Hughes, Salvatore Savasta, and Franco Nori

Phys. Rev. Research 3, 023079 (2021) - Published 28 April, 2021

The authors use an approach based on operational procedures involving measurements to study gauges in cavity QED under a ultrastrong coupling regime.

Determining quantum Monte Carlo simulability with geometric phases

Itay Hen

Phys. Rev. Research 3, 023080 (2021) - Published 29 April, 2021

This paper presents a necessary and sufficient condition for the efficient simulability of a Hamiltonian in a given basis by quantum Monte Carlo.

Widening the sharpness modulation region of an entanglement-assisted sequential quantum random access code: Theory, experiment, and application

Ya Xiao, Xin-Hong Han, Xuan Fan, Hui-Chao Qu, and Yong-Jian Gu

Phys. Rev. Research 3, 023081 (2021) - Published 29 April, 2021

The authors provide a method to widen the sharpness modulation region of sequential entanglement-assisted quantum random access code and show its application for sequential device independent randomness expansion.

Analytical solution for time integrals in diagrammatic expansions: Application to real-frequency diagrammatic Monte Carlo

J. Vučičević, P. Stipsić, and M. Ferrero

Phys. Rev. Research 3, 023082 (2021) - Published 29 April, 2021

The authors find an analytical solution to the imaginary time integrals that arise in quantum many-body perturbation theory, and use it to investigate the two-dimensional Hubbard model with diagrammatic Monte Carlo algorithms.

Symmetry-related transport on a fractional quantum Hall edge

Jinhong Park, Bernd Rosenow, and Yuval Gefen

Phys. Rev. Research 3, 023083 (2021) - Published 29 April, 2021

The authors study the interplay between topological constraints and symmetries on the edge of composite quantum Hall edges, and its manifestation in transport quantities.

Machine learning time-local generators of open quantum dynamics

Paolo P. Mazza, Dominik Zietlow, Federico Carollo, Sabine Andergassen, Georg Martius, and Igor Lesanovsky

Phys. Rev. Research 3, 023084 (2021) - Published 30 April, 2021

This work shows how neural networks can learn the dynamical generator of the time-evolution of local degrees of freedom in many-body systems.

Synthetic superfluid chemistry with vortex-trapped quantum impurities

Matthew Edmonds, Minoru Eto, and Muneto Nitta

Phys. Rev. Research 3, 023085 (2021) - Published 3 May, 2021

The authors construct an analogy between bosonic superfluid vortices carrying quantum impurity atoms and chemistry, revealing the possibility of covalent bonds, bonding and anti-bonding states and spectral level crossings.

Z2-enriched symmetry indicators for topological superconductors in the 1651 magnetic space groups

Seishiro Ono, Hoi Chun Po, and Ken Shiozaki

Phys. Rev. Research 3, 023086 (2021) - Published 3 May, 2021

The authors develop a framework to diagnose topological superconductivity based on irreducible representations and Pfaffian invariants.

Allan deviation tells the binding properties in single-molecule sensing with whispering-gallery-mode optical microcavities

Deshui Yu and Frank Vollmer

Phys. Rev. Research 3, 023087 (2021) - Published 3 May, 2021

This paper uses the Allan variance to analyze the frequency deviations that accumulate throughout the single-molecule detection in to extract information about the single-molecule processes even when the individual single-molecule events are obscured by noises.

Schrödinger cat states in quantum-dot-cavity systems

M. Cosacchi, T. Seidelmann, J. Wiercinski, M. Cygorek, A. Vagov, D. E. Reiter, and V. M. Axt

Phys. Rev. Research 3, 023088 (2021) - Published 3 May, 2021

The authors explore the possibility of deterministically preparing photonic Schrödinger-cat states in a semiconductor quantum-dot-cavity system.

Multistate current-induced magnetization switching in Au/Fe/MgO(001) epitaxial heterostructures

P. Gospodarič, E. Młyńczak, I. Soldatov, A. Kákay, D. E. Bürgler, L. Plucinski, R. Schäfer, J. Fassbender, and C. M. Schneider

Phys. Rev. Research 3, 023089 (2021) - Published 3 May, 2021

The authors demonstrate current-induced magnetization switching in Au/Fe/MgO(001) Hall bars, identify stable intermediate resistance states based on the magnetic domain structure and find that the switching is Oersted field-driven.

Generalization of group-theoretic coherent states for variational calculations

Tommaso Guaita, Lucas Hackl, Tao Shi, Eugene Demler, and J. Ignacio Cirac

Phys. Rev. Research 3, 023090 (2021) - Published 3 May, 2021

The authors introduce a class of quantum states for variational studies that exhibits entanglement while still admitting efficient computation of expectation values.

Phase transition in the binary mixture of jammed particles with large size dispersity

Yusuke Hara, Hideyuki Mizuno, and Atsushi Ikeda

Phys. Rev. Research 3, 023091 (2021) - Published 3 May, 2021

The authors investigate the structural and mechanical properties of binary jammed solids, and reveal the nature of the transition in between two different jammed phases.

Quantum-optimal-control-inspired ansatz for variational quantum algorithms

Alexandre Choquette, Agustin Di Paolo, Panagiotis Kl. Barkoutsos, David Sénéchal, Ivano Tavernelli, and Alexandre Blais

Phys. Rev. Research 3, 023092 (2021) - Published 3 May, 2021

The authors propose a quantum circuit, inspired by the theory of quantum optimal control, to prepare the ground state of the few-body Hubbard model and the water molecule with high-fidelity in a quantum computer.

Strong-coupling diagnostics for multimode open systems

C. Kow, Z. Xiao, A. Metelmann, and A. Kamal

Phys. Rev. Research 3, 023093 (2021) - Published 3 May, 2021

The authors present a technique based on two-dimension eigenvector projections for detecting correlation depth and connectivity in multi-mode open systems.

Analytical modeling of the static and dynamic response of thermally actuated optical waveguide circuits

Ciro Pentangelo, Simone Atzeni, Francesco Ceccarelli, Roberto Osellame, and Andrea Crespi

Phys. Rev. Research 3, 023094 (2021) - Published 4 May, 2021

This work proposes an analytical model of the heat diffusion, adapted to the typical geometry of optical chips, to describe the static and dynamic response of thermo-optic phase shifters.

Neural-network variational quantum algorithm for simulating many-body dynamics

Chee Kong Lee, Pranay Patil, Shengyu Zhang, and Chang Yu Hsieh

Phys. Rev. Research 3, 023095 (2021) - Published 5 May, 2021

The authors proposed a hybrid quantum-classical algorithm based on the restricted Boltzmann machine neural network to simulate the time evolution of quantum many-body systems.

Entropy of a quantum channel

Gilad Gour and Mark M. Wilde

Phys. Rev. Research 3, 023096 (2021) - Published 5 May, 2021

The authors generalize the von Neumann entropy from quantum states to quantum channels, which model evolutions of quantum physical systems, and they provide a physical interpretation of a quantum channel’s entropy in terms of an information-processing task called quantum channel merging.

Recoil momentum effects in quantum processes induced by twisted photons

Andrei Afanasev, Carl E. Carlson, and Asmita Mukherjee

Phys. Rev. Research 3, 023097 (2021) - Published 6 May, 2021

The authors demonstrate that quantum vortex states of light and photons show transverse recoil momentum to the final state that exceeds a longitudinal momentum defined by photon’s wave number, when absorbed by well localized quantum systems in sub-wavelength proximity from the phase singularity.

Spin-orbital magnetic response of relativistic fermions with band hybridization

Yasufumi Araki, Daiki Suenaga, Kei Suzuki, and Shigehiro Yasui

Phys. Rev. Research 3, 023098 (2021) - Published 7 May, 2021

This article shows the spin-orbital contribution to magnetic susceptibility in a hybrid system of relativistic and nonrelativistic fermions, which can occur both in solid states and in quark matter.

Noise-free on-demand atomic frequency comb quantum memory

Sebastian P. Horvath, Mohammed K. Alqedra, Adam Kinos, Andreas Walther, Jan Marcus Dahlström, Stefan Kröll, and Lars Rippe

Phys. Rev. Research 3, 023099 (2021) - Published 7 May, 2021

The authors present a modification to the atomic-frequency comb protocol that utilizes the Stark effect to achieve background free, on demand, control.

Distinctive class of dissipation-induced phase transitions and their universal characteristics

Matteo Soriente, Toni L. Heugel, Keita Omiya, R. Chitra, and Oded Zilberberg

Phys. Rev. Research 3, 023100 (2021) - Published 7 May, 2021

This work introduces method to analyze dissipation-induced phase transitions that take the system out of its ground state and stabilize a higher-energy stationary state.

Bound entangled singlet-like states for quantum metrology

Károly F. Pál, Géza Tóth, Erika Bene, and Tamás Vértesi

Phys. Rev. Research 3, 023101 (2021) - Published 10 May, 2021

This work presents bipartite quantum states with a weak form of entanglement and compare their performance with separable states in quantum metrology.

Relativistic corrections to the thermal interaction of bound particles

D. Solovyev, T. Zalialiutdinov, and A. Anikin

Phys. Rev. Research 3, 023102 (2021) - Published 10 May, 2021

The authors describe the thermal interaction of bound charged particles with relativistic effects taken into account.

Generating ultradense pair beams using 400 GeV/c protons

C. D. Arrowsmith, N. Shukla, N. Charitonidis, R. Boni, H. Chen, T. Davenne, A. Dyson, D. H. Froula, J. T. Gudmundsson, B. T. Huffman, Y. Kadi, B. Reville, S. Richardson, S. Sarkar, J. L. Shaw, L. O. Silva, P. Simon, R. M. G. M. Trines, R. Bingham, and G. Gregori

Phys. Rev. Research 3, 023103 (2021) - Published 10 May, 2021

The authors propose an experiment at CERN to understand the energetic processes involved in the violent emission observed in gamma-ray bursts, black-hole jets, and magnetars.

Coherence-protected nonadiabatic geometric quantum computation

K. Z. Li, G. F. Xu, and D. M. Tong

Phys. Rev. Research 3, 023104 (2021) - Published 10 May, 2021

The authors put forward an approach to the realization of coherence-protected nonadiabatic geometric gates which have robustness against control errors and decoherence.

Superfluid vortices in four spatial dimensions

Ben McCanna and Hannah M. Price

Phys. Rev. Research 3, 023105 (2021) - Published 10 May, 2021

This paper shows that superfluids in four spatial dimensions have stationary states containing two vortex planes intersecting at a single point.

Anharmonic classical time crystals: A coresonance pattern formation mechanism

Zachary G. Nicolaou and Adilson E. Motter

Phys. Rev. Research 3, 023106 (2021) - Published 10 May, 2021

The authors describe a classical discrete time crystal phase emerging through the excitation of a pair of modes that coresonate with parametric driving, resulting in a tunable anharmonic frequency response.

Anomaly constraint on chiral central charge of (2+1)d topological order

Ryohei Kobayashi

Phys. Rev. Research 3, 023107 (2021) - Published 10 May, 2021

The authors show that a gapped boundary state of (3+1)-dimensional topological superconductor in a specific class with time reversal symmetry must carry nontrivially quantized chiral central charge.

Floquet Majorana bound states in voltage-biased planar Josephson junctions

Changnan Peng, Arbel Haim, Torsten Karzig, Yang Peng, and Gil Refael

Phys. Rev. Research 3, 023108 (2021) - Published 10 May, 2021

The authors show that Floquet Majorana modes should emerge in a voltage-bias planar Josephson junction and explore the possibility of manipulating Majorana bound states in one-dimensional settings.

Bloch-type photonic skyrmions in optical chiral multilayers

Qiang Zhang, Zhenwei Xie, Luping Du, Peng Shi, and Xiaocong Yuan

Phys. Rev. Research 3, 023109 (2021) - Published 10 May, 2021

The authors reveal that in a chiral waveguide, spin-orbit interaction in a plasmonic vortex results in a Bloch-type skyrmion-like photonic spin distribution.

Revealing the importance of interfaces for pure spin current transport

A. Pfeiffer, R. M. Reeve, K. Elphick, A. Hirohata, and M. Kläui

Phys. Rev. Research 3, 023110 (2021) - Published 10 May, 2021

The authors measure spin transport and spin absorption across interfaces in lateral spin-valve devices and correlate this electrical characterization to direct imaging of the defect structure of the buried interfaces.

Current-induced magnetization caused by crystal chirality in nonmagnetic elemental tellurium

Tetsuya Furukawa, Yuta Watanabe, Naoki Ogasawara, Kaya Kobayashi, and Tetsuaki Itou

Phys. Rev. Research 3, 023111 (2021) - Published 10 May, 2021

The authors show the onset of a current-induced magnetization whose sign depends on crystal chirality in nonmagnetic elemental tellurium using nuclear magnetic resonance.

Collective modes and superfluidity of a two-dimensional ultracold Bose gas

Vijay Pal Singh and Ludwig Mathey

Phys. Rev. Research 3, 023112 (2021) - Published 10 May, 2021

The authors determine the heating rate of a superfluid two-dimensional Bose gas by stirring it with a moving lattice potential, which reveals the two-sound mode structure of the excitation spectrum and their hybridization.

Muonium hydride: The lowest density crystal

Youssef Kora, Massimo Boninsegni, Dam Thanh Son, and Shiwei Zhang

Phys. Rev. Research 3, 023113 (2021) - Published 10 May, 2021

This paper explore the condensed phase of an assembly of molecules of muonium hydride in search of a low density crystal.

Long-range Rydberg-atom–ion molecules of Rb and Cs

A. Duspayev, X. Han, M. A. Viray, L. Ma, J. Zhao, and G. Raithel

Phys. Rev. Research 3, 023114 (2021) - Published 13 May, 2021

The authors present a Rydberg-atom-ion dimer formed via long-range multipolar interactions between a point ion and a Rydberg atom.

Escape from an attractor generated by recurrent exit

Lou Zonca and David Holcman

Phys. Rev. Research 3, 023115 (2021) - Published 14 May, 2021

This article shows that stochastic trajectories can return inside the basin several times before escaping far away, thus increasing the total escape time.

Terahertz spin dynamics driven by an optical spin-orbit torque

Ritwik Mondal, Andreas Donges, and Ulrich Nowak

Phys. Rev. Research 3, 023116 (2021) - Published 14 May, 2021

The authors investigate a relativistic spin torque within atomistic spin simulations and show it can induce spin excitations comparable to the non-relativistic Zeeman torque.

Hierarchical route to the emergence of leader nodes in real-world networks

Joseph D. O'Brien, Kleber A. Oliveira, James P. Gleeson, and Malbor Asllani

Phys. Rev. Research 3, 023117 (2021) - Published 14 May, 2021

This paper shows the simultaneous emergence of leader nodes at the pinnacle of the structural hierarchy underlying a large collection of real-world networked systems once the network non-normality surpasses some threshold, alongside its effect on dynamical processes upon the network.

Spectral Lyapunov exponents in chaotic and localized many-body quantum systems

Amos Chan, Andrea De Luca, and J. T. Chalker

Phys. Rev. Research 3, 023118 (2021) - Published 14 May, 2021

The authors analyze the spectral statistics of many-body quantum chaotic and many-body localized systems, by associating a given Floquet quantum circuit with a dual transfer matrix product, which is characterized by a spectrum of Lyapunov exponents.

Hydrodynamic holes and Froude horizons: Circular shallow water profiles for astrophysical analogs

Amilcare Porporato, Luca Ridolfi, and Lamberto Rondoni

Phys. Rev. Research 3, 023119 (2021) - Published 14 May, 2021

The authors provide shallow water analogs in both isentropic and dissipative conditions, with double event-horizon holes.

Theory of weak symmetry breaking of translations in Z2 topologically ordered states and its relation to topological superconductivity from an exact lattice Z2 charge-flux attachment

Peng Rao and Inti Sodemann

Phys. Rev. Research 3, 023120 (2021) - Published 14 May, 2021

The authors study the phenomenon of weak symmetry breaking in which anyon quasiparticles can break the symmetry of the Hamiltonian even though the ground state remains fully symmetric.

Higher-order topology and fractional charge in monolayer graphene

Feng Liu and Katsunori Wakabayashi

Phys. Rev. Research 3, 023121 (2021) - Published 14 May, 2021

The authors demonstrate higher-order topological corner states and related fractional charge in monolayer graphene.

Dynamical Coulomb blockade under a temperature bias

H. Duprez, F. Pierre, E. Sivre, A. Aassime, F. D. Parmentier, A. Cavanna, A. Ouerghi, U. Gennser, I. Safi, C. Mora, and A. Anthore

Phys. Rev. Research 3, 023122 (2021) - Published 17 May, 2021

The authors investigate the influence of a temperature bias on the conductance suppression of a quantum conductor embedded into a dissipative circuit.

Fractonic topological phases from coupled wires

Joseph Sullivan, Arpit Dua, and Meng Cheng

Phys. Rev. Research 3, 023123 (2021) - Published 17 May, 2021

The authors develop several families of coupled wire models that realize fractonic topological phases.

Efficient generation of turbulent collisionless shocks in laser-ablated counter-streaming plasmas

A. Grassi and F. Fiuza

Phys. Rev. Research 3, 023124 (2021) - Published 17 May, 2021

The authors study the formation of high-Mach number collisionless shocks in the interaction of laser-driven plasma flows.

Optimal navigation strategies for microswimmers on curved manifolds

Lorenzo Piro, Evelyn Tang, and Ramin Golestanian

Phys. Rev. Research 3, 023125 (2021) - Published 18 May, 2021

The authors show that optimal navigation in the presence of arbitrary stationary flows on curved surfaces is achieved through geodesics of an asymmetric metric from general relativity.

Bistability of squeezing and entanglement in cavity magnonics

Zhi-Bo Yang, Hua Jin, Jing-Wen Jin, Jian-Yu Liu, Hong-Yu Liu, and Rong-Can Yang

Phys. Rev. Research 3, 023126 (2021) - Published 18 May, 2021

This article describes the bistable behavior of squeezed and entangled states induced by the magnon self-nonlinear Kerr effect.

Open quantum systems beyond Fermi's golden rule: Diagrammatic expansion of the steady-state time-convolutionless master equations

Michael Sven Ferguson, Oded Zilberberg, and Gianni Blatter

Phys. Rev. Research 3, 023127 (2021) - Published 19 May, 2021

The authors introduce a diagrammatic expansion for the time-convolutionless master equation in the steady-state limit and showcase the method on the non interacting resonant level up to fourth order.

Optimizing the relaxation route with optimal control

A. Prados

Phys. Rev. Research 3, 023128 (2021) - Published 19 May, 2021

The author shows that bang-bang protocols minimize the connection time between nonequilibrium steady states.

Jamming and force distribution in growing epithelial tissue

Pranav Madhikar, Jan Åström, Björn Baumeier, and Mikko Karttunen

Phys. Rev. Research 3, 023129 (2021) - Published 19 May, 2021

The authors study growth, proliferation and migration of cancer-like soft cells in a matrix of healthy cells from a mechanobiological perspective, and demonstrate that local mechanical forces can be used to regulate tissue formation.

Satellite quantum communications: Fundamental bounds and practical security

Stefano Pirandola

Phys. Rev. Research 3, 023130 (2021) - Published 19 May, 2021

This paper establishes ultimate limits and practical rates for satellite quantum communications.

Coexistence of superconductivity and spin-splitting fields in superconductor/ferromagnetic insulator bilayers of arbitrary thickness

Alberto Hijano, Stefan Ilić, Mikel Rouco, Carmen González-Orellana, Maxim Ilyn, Celia Rogero, P. Virtanen, T. T. Heikkilä, S. Khorshidian, M. Spies, N. Ligato, F. Giazotto, E. Strambini, and F. Sebastián Bergeret

Phys. Rev. Research 3, 023131 (2021) - Published 19 May, 2021

The authors reveal therole of the thickness on the spectral properties and phasetransition of a diffusive superconducting film adjacent to aferromagnetic insulating layer.

Compatible braidings with Hopf links, multiloop, and Borromean rings in (3+1)-dimensional spacetime

Zhi-Feng Zhang and Peng Ye

Phys. Rev. Research 3, 023132 (2021) - Published 20 May, 2021

This work studies what braiding processes are compatible in a (3+1)D topological order.

Noise-driven amplification mechanisms governing the emergence of coherent extreme events in excitable systems

Lluís Hernández-Navarro, Sergio Faci-Lázaro, Javier G. Orlandi, Ulrike Feudel, Jesús Gómez-Gardeñes, and Jordi Soriano

Phys. Rev. Research 3, 023133 (2021) - Published 21 May, 2021

The authors develop a model to describe the emergence of extreme coherent events in coupled excitable systems, specifically neuronal networks, and show that activity in a small ensemble of neurons can be strongly amplified by connectivity and noise.

Nonequilibrium thermodynamics and phase transition of Ehrenfest urns with interactions

Chi-Ho Cheng and Pik-Yin Lai

Phys. Rev. Research 3, 023134 (2021) - Published 21 May, 2021

The authors extend the Ehrenfest urn model that exhibits coexisting non-equilibrium steady states and derive a generalized non-equilibrium thermodynamic law.

Impact of electrostatic fields in layered crystalline BCS superconductors

Luca Chirolli, Tommaso Cea, and Francesco Giazotto

Phys. Rev. Research 3, 023135 (2021) - Published 21 May, 2021

The authors show the possibility to control the superconducting gap via an electrostatic field in metallic finite size systems characterized by an average level spacing weakly smaller than the gap.

In situ monitoring distribution and migration of He3 in liquid-solid He4 mixtures

Zhi Gang Cheng and John Beamish

Phys. Rev. Research 3, 023136 (2021) - Published 21 May, 2021

The authors develop a technique to measure the concentration of isotopic impurities in liquid helium and use it to monitor the migration of 3He impurities between liquid and solid 4He.

Dynamical signatures of symmetry protected topology following symmetry breaking

Jacob A. Marks, Michael Schüler, and Thomas P. Devereaux

Phys. Rev. Research 3, 023137 (2021) - Published 21 May, 2021

The authors show that out of equilibrium, symmetry breaking and constrained dynamics can produce dynamical signatures of topology on single-particle and many-body levels.

Topological chiral spin liquids and competing states in triangular lattice SU(N) Mott insulators

Xu-Ping Yao, Yonghao Gao, and Gang Chen

Phys. Rev. Research 3, 023138 (2021) - Published 21 May, 2021

The authors study the SU(N) Heisenberg antiferromagnets on the triangular lattice in the large-N limit and show that under the strict local constraints, the system favors topological chiral spin liquids when N>5.

Exploring Bell nonlocality of quantum networks with stabilizing and logical operators

Li-Yi Hsu and Ching-Hsu Chen

Phys. Rev. Research 3, 023139 (2021) - Published 24 May, 2021

The authors show that agents can prepare appropriate local observables for violating nonlinear Bell inequalities of quantum networks.

High-temperature antiferromagnetism in Yb based heavy fermion systems proximate to a Kondo insulator

Shintaro Suzuki, Kou Takubo, Kentaro Kuga, Wataru Higemoto, Takashi U. Ito, Takahiro Tomita, Yasuyuki Shimura, Yosuke Matsumoto, Cédric Bareille, Hiroki Wadati, Shik Shin, and Satoru Nakatsuji

Phys. Rev. Research 3, 023140 (2021) - Published 24 May, 2021

The authors show the onset of strong antiferromagnetism with at high Neel temperature in a Kondo-insulator like state in Mn doped valence fluctuation compounds α-YbAlB4.

Spin-polarized tunneling in critically disordered Be-Al bilayers

F. N. Womack, P. W. Adams, and G. Catelani

Phys. Rev. Research 3, 023141 (2021) - Published 24 May, 2021

The authors follow the Zeeman splitting of the BCS coherence peaks in highly disordered ultra-thin Be-Al bilayers across the parallel field mediated superconductor-insulator transition.

Signatures of the BCS-BEC crossover in the yrast spectra of Fermi quantum rings

Ulrich Ebling, Ali Alavi, and Joachim Brand

Phys. Rev. Research 3, 023142 (2021) - Published 24 May, 2021

The authors study the effect of pairing on yrast states of the Hubbard model in one and two dimensions using quantum Monte Carlo calculations.

Device-independent quantification of measurement incompatibility

Shin-Liang Chen, Nikolai Miklin, Costantino Budroni, and Yueh-Nan Chen

Phys. Rev. Research 3, 023143 (2021) - Published 24 May, 2021

The authors provide a direct link and a quantitative relation between the degree of measurement incompatibility and the violation of a Bell inequality.

Weak-winner phase synchronization: A curious case of weak interactions

Anshul Choudhary, Arindam Saha, Samuel Krueger, Christian Finke, Epaminondas Rosa, Jr., Jan A. Freund, and Ulrike Feudel

Phys. Rev. Research 3, 023144 (2021) - Published 24 May, 2021

The authors demonstrate a case of weak interactions in a chain of three or more heterogeneously coupled nonlinear oscillators where the weakly coupled part of the chain locks themselves in phase while the rest of the chain remains drifting.

Magnetic field driven transition between valence bond solid and antiferromagnetic order in a distorted triangular lattice

Yasuhiro Shimizu, Mitsuhiko Maesato, Makoto Yoshida, Masashi Takigawa, Masayuki Itoh, Akihiro Otsuka, Hideki Yamochi, Yukihiro Yoshida, Genta Kawaguchi, David Graf, and Gunzi Saito

Phys. Rev. Research 3, 023145 (2021) - Published 26 May, 2021

The authors show a magnetic phase transition from the valence bond solid to quantum spin liquid and magnetic order in a frustrated molecular magnet with triangular lattice.

Simulation of memristive synapses and neuromorphic computing on a quantum computer

Ying Li

Phys. Rev. Research 3, 023146 (2021) - Published 26 May, 2021

This paper proposes a quantum gate that demonstrates memristive behavior, and this gate can be used to simulate synapses and build a quantum neural network.

Polaronic quantum confinement in bulk CsPbBr3 perovskite crystals revealed by state-resolved pump/probe spectroscopy

Colin D. Sonnichsen, Dallas P. Strandell, Patrick J. Brosseau, and Patanjali Kambhampati

Phys. Rev. Research 3, 023147 (2021) - Published 26 May, 2021

These authors show that perovskites support a new state of quantum confined excitonic polarons.

Optimization schemes for unitary tensor-network circuit

Reza Haghshenas

Phys. Rev. Research 3, 023148 (2021) - Published 26 May, 2021

This work assesses the variational optimization schemes for quantum tensor-network circuits with different structures.

Quantum confinement induced metal-insulator transition in strongly correlated quantum wells of SrVO3 superlattices

A. D. N. James, M. Aichhorn, and J. Laverock

Phys. Rev. Research 3, 023149 (2021) - Published 26 May, 2021

The authors theoretically show that few layers of SrVO3 encapsulated in a superlattice with SrTiO3 can be driven through a metal-insulator transition as a result of quantum confinement.

Violation of generalized fluctuation-dissipation theorem in biological limit cycle oscillators with state-dependent internal drives: Applications to hair cell oscillations

Janaki Sheth, Dolores Bozovic, and Alex J. Levine

Phys. Rev. Research 3, 023150 (2021) - Published 27 May, 2021

The authors show that feedback-based control in active, nonequilibrium systems with steady-state oscillatory behavior breaks the equilibrium as well as fluctuation-dissipation relations.

Parallel spin stripes and their coexistence with superconducting ground states at optimal and high doping in La1.6xNd0.4SrxCuO4

Qianli Ma, Kirrily C. Rule, Zachary W. Cronkwright, Mirela Dragomir, Gabrielle Mitchell, Evan M. Smith, Songxue Chi, Alexander I. Kolesnikov, Matthew B. Stone, and Bruce D. Gaulin

Phys. Rev. Research 3, 023151 (2021) - Published 27 May, 2021

The authors show the existence of the parallel spin stripe order in the optimal and over-doped region of La1.6xNd0.4SrxCuO4 at low temperatures

Cavity-QED measurements of the Sr87 millihertz optical clock transition and determination of its natural linewidth

Juan A. Muniz, Dylan J. Young, Julia R. K. Cline, and James K. Thompson

Phys. Rev. Research 3, 023152 (2021) - Published 27 May, 2021

The authors develop a nondestructive cavity-QED technique to measure observables along long-lived optical transitions, applying this technique to determine the lifetime of a millihertz-linewidth transition in 87-Sr used in next-gen atomic clocks.

Quantum noise protects quantum classifiers against adversaries

Yuxuan Du, Min-Hsiu Hsieh, Tongliang Liu, Dacheng Tao, and Nana Liu

Phys. Rev. Research 3, 023153 (2021) - Published 27 May, 2021

The authors show a connection between the robustness of quantum algorithms for classification with a concept called differential privacy.

Ultrafast dynamics of gallium vacancy charge states in βGa2O3

Arjan Singh, Okan Koksal, Nicholas Tanen, Jonathan McCandless, Debdeep Jena, Huili (Grace) Xing, Hartwin Peelaers, and Farhan Rana

Phys. Rev. Research 3, 023154 (2021) - Published 28 May, 2021

The authors use optical supercontinuum spectroscopy to probe the time evolution of the absorption spectrum of gallium vacancy charge states in β- Ga2O3 at ultrafast time scales.

Chiral approximation to twisted bilayer graphene: Exact intravalley inversion symmetry, nodal structure, and implications for higher magic angles

Jie Wang, Yunqin Zheng, Andrew J. Millis, and Jennifer Cano

Phys. Rev. Research 3, 023155 (2021) - Published 28 May, 2021

The authors study the flatband wavefunction of twisted bilayer graphene at the dispersionless limit.

Adaptable Hamiltonian neural networks

Chen-Di Han, Bryan Glaz, Mulugeta Haile, and Ying-Cheng Lai

Phys. Rev. Research 3, 023156 (2021) - Published 28 May, 2021

This paper develops a class of Hamiltonian Neural Networks that are capable of adaptable prediction of nonlinear physical systems

Integrable spin-1 model with magnetic impurity

Jian Wang, Yusong Cao, Yi Qiao, Junpeng Cao, and Wen-Li Yang

Phys. Rev. Research 3, 023157 (2021) - Published 28 May, 2021

The authors propose an integrable spin-1 Heisenberg chain with a boundary spin-1/2 magnetic impurity.

Ballistic two-dimensional lateral heterojunction bipolar transistor

Leonardo Lucchesi, Gaetano Calogero, Gianluca Fiori, and Giuseppe Iannaccone

Phys. Rev. Research 3, 023158 (2021) - Published 28 May, 2021

The authors explore the concept of a monolayer ballistic heterojunction bipolar transistor based on a lateral heterostructure of transition metal dichalcogenides through self-consistent simulations of electrostatics and quantum transport.

Phase-contrast imaging of multiply-scattering extended objects at atomic resolution by reconstruction of the scattering matrix

Philipp M. Pelz, Hamish G. Brown, Scott Stonemeyer, Scott D. Findlay, Alex Zettl, Peter Ercius, Yaqian Zhang, Jim Ciston, M. C. Scott, and Colin Ophus

Phys. Rev. Research 3, 023159 (2021) - Published 28 May, 2021

The authors propose an algorithm for recovering phase-contrast information from scanning diffraction experiments with strongly scattering materials.

Hydrodynamic theory of chiral angular momentum generation in metals

Hiroshi Funaki and Gen Tatara

Phys. Rev. Research 3, 023160 (2021) - Published 28 May, 2021

The authors show the onset of chiral angular momentum generation of electrons in solids using a hydrodynamic theory.

Topological theory of resilience and failure spreading in flow networks

Franz Kaiser and Dirk Witthaut

Phys. Rev. Research 3, 023161 (2021) - Published 1 June, 2021

This paper analyzes the impact of damages in a supply network and establishes the equivalence to a graph theoretical counting problem.

Systematic manipulation of the surface conductivity of SmB6

M. Victoria Ale Crivillero, M. König, J. C. Souza, P. G. Pagliuso, J. Sichelschmidt, Priscila F. S. Rosa, Z. Fisk, and S. Wirth

Phys. Rev. Research 3, 023162 (2021) - Published 1 June, 2021

The authors describe the effects of surface treatments on the conductance of the candidate topological Kondo insulator SmB6, specifically by microscopically defined focused ion beam trench cutting.

Photoassociation of ultracold long-range polyatomic molecules

Marko Gacesa, Jason N. Byrd, Jonathan Smucker, John A. Montgomery, Jr., and Robin Côté

Phys. Rev. Research 3, 023163 (2021) - Published 1 June, 2021

The authors align a pair of ultracold polar molecules using an external electric field and use a laser to excite one of them and photo-associate the pair, binding them into an ultracold polyatomic molecule.

Non-Markovian momentum computing: Thermodynamically efficient and computation universal

Kyle J. Ray, Alexander B. Boyd, Gregory W. Wimsatt, and James P. Crutchfield

Phys. Rev. Research 3, 023164 (2021) - Published 1 June, 2021

The authors explore the effect of allowing the hidden momentum states to participate in the computation protocol in thermodynamic computation.

Digital quantum simulation of molecular dynamics and control

Alicia B. Magann, Matthew D. Grace, Herschel A. Rabitz, and Mohan Sarovar

Phys. Rev. Research 3, 023165 (2021) - Published 1 June, 2021

The authors present a framework that uses quantum and classical computers in tandem to design optimal fields for controlling the dynamics of molecular systems.

Lattice distortion induced first- and second-order topological phase transition in a rectangular high-Tc superconducting monolayer

Li Chen, Bin Liu, Gang Xu, and Xin Liu

Phys. Rev. Research 3, 023166 (2021) - Published 1 June, 2021

The authors show that in the FeSexTe1x monolayer with rectangular crystal structure, the lattice distortion can induce the first-order topological phase transition of the electronic band structure and the second-order phase transition of the superconductor in a wide doping range.

Controllable Josephson junction for photon Bose-Einstein condensates

Mario Vretenar, Ben Kassenberg, Shivan Bissesar, Chris Toebes, and Jan Klaers

Phys. Rev. Research 3, 023167 (2021) - Published 1 June, 2021

The authors experimentally demonstrate controllable phase relations between photon Bose-Einstein condensates realizing an optical analog of a controllable 0,π-Josephson junction.

Continuous and time-discrete non-Markovian system-reservoir interactions: Dissipative coherent quantum feedback in Liouville space

Oliver Kaestle, Regina Finsterhoelzl, Andreas Knorr, and Alexander Carmele

Phys. Rev. Research 3, 023168 (2021) - Published 2 June, 2021

The authors present a quasi-two-dimensional tensor network architecture to simulate quantum systems simultaneously exposed to two structured reservoirs with non-Markovian system-reservoir interactions.

Search efficiency of discrete fractional Brownian motion in a random distribution of targets

S. Mohsen J. Khadem, Sabine H. L. Klapp, and Rainer Klages

Phys. Rev. Research 3, 023169 (2021) - Published 2 June, 2021

The authors show that the minimization of search times for stochastic processes with power law memory to find randomly distributed targets depends on the variation of many control parameters.

Cleaving plane-dependent electronic structures of transition metal diarsenides

Gyanendra Dhakal, M. Mofazzel Hosen, Wei-Chi Chiu, Bahadur Singh, Cheng-Yi Huang, Klauss Dimitri, Baokai Wang, Firoza Kabir, Christopher Sims, Sabin Regmi, William Neff, Jonathan Denlinger, Hsin Lin, Dariusz Kaczorowski, Arun Bansil, and Madhab Neupane

Phys. Rev. Research 3, 023170 (2021) - Published 2 June, 2021

The authors investigate two members of transition metal diarsenide family and reveal the cleaving plane dependent electronic structure.

Macroscopic fluctuations emerge in balanced networks with incomplete recurrent alignment

Itamar D. Landau and Haim Sompolinsky

Phys. Rev. Research 3, 023171 (2021) - Published 3 June, 2021

The authors generalize the theory of excitation-inhibition balance to recurrent networks with arbitrary low-rank connectivity structure and show incomplete alignment between the row-space and column-space of that connectivity leads to an emergence of macroscopic, low-dimensional fluctuations.

Ternary quarter wavelength coatings for gravitational wave detector mirrors: Design optimization via exhaustive search

V. Pierro, V. Fiumara, F. Chiadini, V. Granata, O. Durante, J. Neilson, C. Di Giorgio, R. Fittipaldi, G. Carapella, F. Bobba, M. Principe, and I. M. Pinto

Phys. Rev. Research 3, 023172 (2021) - Published 4 June, 2021

This paper studies the design and performance of mirror coatings for gravitational wave detectors based on quarter-wavelength layers made of three materials.

Electronic structure of semiconductor nanoparticles from stochastic evaluation of imaginary-time path integral

Andrei Kryjevski, Thomas Luu, and Valentin Karasiev

Phys. Rev. Research 3, 023173 (2021) - Published 4 June, 2021

This work explore the fermion sign problem utilizing the output of a density functional theory simulation as a basis in the path integral for electrons in a semiconductor nanoparticle.

Topologically protected steady cycles in an icelike mechanical metamaterial

Carl Merrigan, Cristiano Nisoli, and Yair Shokef

Phys. Rev. Research 3, 023174 (2021) - Published 4 June, 2021

This paper shows that bistable mechanical metamaterials respond with multiple, topologically distinct hysteresis cycles when driven by single, textured periodic boundary forcing.

Experimental test of entropic noise-disturbance uncertainty relations for three-outcome qubit measurements

Stephan Sponar, Armin Danner, Vito Pecile, Nico Einsidler, Bülent Demirel, and Yuji Hasegawa

Phys. Rev. Research 3, 023175 (2021) - Published 4 June, 2021

The authors present a neutron optical experiment and explore its performance in projective measurements with regards to information gain and disturbance tradeoff in successive spin measurements.

Spectral statistics in constrained many-body quantum chaotic systems

Sanjay Moudgalya, Abhinav Prem, David A. Huse, and Amos Chan

Phys. Rev. Research 3, 023176 (2021) - Published 4 June, 2021

The authors study the spectral form factor for Floquet random quantum circuits and analytically identify the onset of quantum chaos in many-body systems subject to local constraints, showing that systems with conserved higher moments display subdiffusive dynamics.

Revealing three-dimensional quantum criticality by Sr substitution in Han purple

Stephan Allenspach, Pascal Puphal, Joosep Link, Ivo Heinmaa, Ekaterina Pomjakushina, Cornelius Krellner, Jakob Lass, Gregory S. Tucker, Christof Niedermayer, Shusaku Imajo, Yoshimitsu Kohama, Koichi Kindo, Steffen Krämer, Mladen Horvatić, Marcelo Jaime, Alexander Madsen, Antonietta Mira, Nicolas Laflorencie, Frédéric Mila, Bruce Normand, Christian Rüegg, Raivo Stern, and Franziska Weickert

Phys. Rev. Research 3, 023177 (2021) - Published 4 June, 2021

This work shows that weak chemical substitution in BaCuSi2O6 causes a structural transition that restores the spin model of stacked dimer bilayers.

Relative acceleration noise mitigation for nanocrystal matter-wave interferometry: Applications to entangling masses via quantum gravity

Marko Toroš, Thomas W. van de Kamp, Ryan J. Marshman, M. S. Kim, Anupam Mazumdar, and Sougato Bose

Phys. Rev. Research 3, 023178 (2021) - Published 4 June, 2021

The authors show that a nanocrystal matter-wave interferometer can be used to create a state-of-the-art quantum sensor to detect low accelerations and discuss how it can be used to probe quantum aspects of gravity in a laboratory.

Unusual HT phase diagram of CeRh2As2: The role of staggered noncentrosymmetricity

Eric G. Schertenleib, Mark H. Fischer, and Manfred Sigrist

Phys. Rev. Research 3, 023179 (2021) - Published 4 June, 2021

This paper shows that the CeRh2As2 phase diagram - which exhibit two superconducting phases - can be described within an extended Ginzburg-Landau theory combining even and odd-parity Cooper pairing states within the staggered non-centrosymmetric crystal structure.

Electronic instabilities in Penrose quasicrystals: Competition, coexistence, and collaboration of order

J. B. Profe, C. Honerkamp, S. Achilles, and D. M. Kennes

Phys. Rev. Research 3, 023180 (2021) - Published 4 June, 2021

This paper explores the interplay between different electronic orderings in quasicrystals using a real space truncated unity functional renormalization group approach.

Magnetic critical behavior and anomalous Hall effect in 2HCo0.22TaS2 single crystals

Yu Liu (刘育), Zhixiang Hu (胡之翔), Eli Stavitski, Klaus Attenkofer, and C. Petrovic

Phys. Rev. Research 3, 023181 (2021) - Published 4 June, 2021

The authors observe a ferromagnetic ground state with strong uniaxial anisotropy in Co-intercalated 2H-Co00.22TaS2 van der Waals single crystals below Tc ∼ 28 K.

Band gaps of liquid water and hexagonal ice through advanced electronic-structure calculations

Thomas Bischoff, Igor Reshetnyak, and Alfredo Pasquarello

Phys. Rev. Research 3, 023182 (2021) - Published 4 June, 2021

The authors study the fundamental band gaps of liquid water and hexagonal ice using many-body perturbation theory and nonempirical hybrid functionals.

Probing the topological Anderson transition with quantum walks

Dmitry Bagrets, Kun Woo Kim, Sonja Barkhofen, Syamsundar De, Jan Sperling, Christine Silberhorn, Alexander Altland, and Tobias Micklitz

Phys. Rev. Research 3, 023183 (2021) - Published 4 June, 2021

The authors characterize chiral symmetric quantum walkswith their anomalous Sinai diffusion and the net spin polarization ata critical phase.

Nonlinearity and wide-band parametric amplification in a (Nb,Ti)N microstrip transmission line

S. Shu, N. Klimovich, B. H. Eom, A. D. Beyer, R. Basu Thakur, H. G. Leduc, and P. K. Day

Phys. Rev. Research 3, 023184 (2021) - Published 4 June, 2021

The authors study the nonlinear response of the superconducting kinetic inductance in capacitively shunted NbTiN microstrip transmission lines.

Pseudochirality at exceptional rings of optical metasurfaces

Radoslaw Kolkowski, Stefanos Kovaios, and A. Femius Koenderink

Phys. Rev. Research 3, 023185 (2021) - Published 4 June, 2021

The authors show that nanoscale patterns of gain and loss in plasmonic metasurfaces can produce rings of exceptional points which couple to circularly polarized light, resulting in different amplification of left- and right-handed optical fields.

Mode structure of a broadband high gain parametric amplifier

Xin Chen, Jacob Zhang, and Z. Y. Ou

Phys. Rev. Research 3, 023186 (2021) - Published 4 June, 2021

This paper investigates the change of the mode structure of a parametric process as the gain changes and finds that the fields will spread out across many modes and the mode functions are broadened as the gain increases.

Universal constraints on selection strength in lineage trees

Arthur Genthon and David Lacoste

Phys. Rev. Research 3, 023187 (2021) - Published 7 June, 2021

The authors obtain linear response inequalities for the strength of selection acting on a phenotypic trait in the context of biological branching processes.

Controlling rotation in the molecular frame with an optical centrifuge

Emil J. Zak, Andrey Yachmenev, and Jochen Küpper

Phys. Rev. Research 3, 023188 (2021) - Published 7 June, 2021

The authors propose a method for coherently controlling the rotation-axis direction in asymmetric top molecules, revealing how to spin a molecule about two different axes at the same time.

Topological nematic phase transition in Kitaev magnets under applied magnetic fields

Masahiro O. Takahashi, Masahiko G. Yamada, Daichi Takikawa, Takeshi Mizushima, and Satoshi Fujimoto

Phys. Rev. Research 3, 023189 (2021) - Published 7 June, 2021

The authors predict the nematic phase transition of Majorana particles in Kitaev magnets which drives the system into the toric code phase.

Many-body hierarchy of dissipative timescales in a quantum computer

Ophelia Evelyn Sommer, Francesco Piazza, and David J. Luitz

Phys. Rev. Research 3, 023190 (2021) - Published 7 June, 2021

The authors devise a method for the simulation of generic local open quantum systems on quantum computers and verify experimentally the existence of a hierarchy of decay timescales.

Understanding the physics of the auxetic response in a liquid crystal elastomer

Thomas Raistrick, Zhaopeng Zhang, Devesh Mistry, Johan Mattsson, and Helen F. Gleeson

Phys. Rev. Research 3, 023191 (2021) - Published 8 June, 2021

This article explains the auxetic behavior of a liquid crystalline elastomer, which occurs at a molecular level, by deducing the strain-induced changes in order parameters and interpreting them as out-of-plane rotations of the molecules.

Echo-assisted impulsive alignment of room-temperature acetone molecules

Junyang Ma, L. H. Coudert, F. Billard, M. Bournazel, B. Lavorel, Jian Wu, G. Maroulis, J.-M. Hartmann, and O. Faucher

Phys. Rev. Research 3, 023192 (2021) - Published 9 June, 2021

The authors show that short-pulse alignment of room-temperature acetone molecules can be improved by rotational echoes.

Lateral confinement of fast electrons and its impact on laser ion acceleration

N. Iwata, A. J. Kemp, S. C. Wilks, K. Mima, D. Mariscal, T. Ma, and Y. Sentoku

Phys. Rev. Research 3, 023193 (2021) - Published 9 June, 2021

The authors show that plasma electrons under petawatt laser light exhibit a random walk in a self-generated field resulting in electron confinement and efficient ion acceleration.

Maximal power for heat engines: Role of asymmetric interaction times

Pedro E. Harunari, Fernando S. Filho, Carlos E. Fiore, and Alexandre Rosas

Phys. Rev. Research 3, 023194 (2021) - Published 9 June, 2021

The authors show that, for a thermal machine composed of a quantum dot in contact with two reservoirs, the optimization of the interaction time between system and reservoirs is enough to get an quasi-optimal power output.

Enhanced superconductivity in quasiperiodic crystals

Zhijie Fan, Gia-Wei Chern, and Shi-Zeng Lin

Phys. Rev. Research 3, 023195 (2021) - Published 10 June, 2021

The authors show the existence of a superconducting dome around a localization-delocalization transition in quasiperiodic systems.

Linear response study of collisionless spin drag

Donato Romito, Carlos Lobo, and Alessio Recati

Phys. Rev. Research 3, 023196 (2021) - Published 10 June, 2021

The authors show that the Andreev-Bashkin drag between two superfluid species is proportional to current-current response functions and compute its effect on the spin speed of sound in a homogeneous mixture, the dipole mode in a trapped gas and the dipole response after a fast perturbation.

Relaxation in an extended bosonic Josephson junction

J.-F. Mennemann, I. E. Mazets, M. Pigneur, H. P. Stimming, N. J. Mauser, J. Schmiedmayer, and S. Erne

Phys. Rev. Research 3, 023197 (2021) - Published 10 June, 2021

The authors present a detailed three-dimensional numerical modeling and analysis of the relaxation dynamics in an extended bosonic Josephson junction realized by two tunnel-coupled elongated superfluids in a double well potential.

Interfacial-curvature-driven coarsening in mass-conserved reaction-diffusion systems

Michio Tateno and Shuji Ishihara

Phys. Rev. Research 3, 023198 (2021) - Published 11 June, 2021

The authors demonstrate that droplet growth in mass-conserved reaction-diffusion systems follows classical evaporation-condensation process.

Quantum oscillations from a pair-density wave

Yosef Caplan and Dror Orgad

Phys. Rev. Research 3, 023199 (2021) - Published 11 June, 2021

This work shows that first-order scattering from a pair-density wave cannot produce quantum oscillations but second-order scattering can.

Measurement-protected quantum phases

Shengqi Sang and Timothy H. Hsieh

Phys. Rev. Research 3, 023200 (2021) - Published 11 June, 2021

The authors find and analyze nonequilibrium quantum phases of matter in hybrid quantum circuits involving both unitary evolution and measurements.

Lattice-fermionic Casimir effect and topological insulators

Tsutomu Ishikawa, Katsumasa Nakayama, and Kei Suzuki

Phys. Rev. Research 3, 023201 (2021) - Published 11 June, 2021

The authors study the Casimir effects for various relativistic lattice fermions, which can be measured in small-size materials such as topological insulators and Dirac semimetals.

Microdisk cavities with a Brewster notch

Julius Kullig and Jan Wiersig

Phys. Rev. Research 3, 023202 (2021) - Published 11 June, 2021

The authors introduce a notched optical microdisk cavity by combining total internal reflection and transmission at Brewster’s angle. The corresponding high-quality modes are excitable with an attached waveguide and have their intensity partially trapped in the free space of the notch.

Universal effectiveness of high-depth circuits in variational eigenproblems

Joonho Kim, Jaedeok Kim, and Dario Rosa

Phys. Rev. Research 3, 023203 (2021) - Published 11 June, 2021

This paper shows that generic high-depth variational circuits can approximate the ground state of any given one-dimensional quantum many-body Hamiltonian by carrying out the local gradient search of the circuit parameters.

Two scenarios for superconductivity in CeRh2As2

David Möckli and Aline Ramires

Phys. Rev. Research 3, 023204 (2021) - Published 11 June, 2021

The authors identify two scenarios to describe the superconducting phases of CeRh2 As2

Decay and revival of a transient trapped Fermi condensate

Timothy Harrison, Martin Link, Alexandra Behrle, Kuiyi Gao, Andreas Kell, Johannes Kombe, Jean-Sébastien Bernier, Corinna Kollath, and Michael Köhl

Phys. Rev. Research 3, 023205 (2021) - Published 11 June, 2021

The authors investigate the response of a strongly-interacting superfluid Fermi gas to a spin-flip and corresponding change of the interaction strength. They observe decay and revival of the condensed fraction and shape oscillations of the gas.

Desynchronization of jammed oscillators by avalanches

William Gilpin

Phys. Rev. Research 3, 023206 (2021) - Published 11 June, 2021

This work shows that the addition of short-range repulsion to classical coupled oscillators leads to continuous avalanche-like cascades, preventing synchronization.

Long-time diffusion and energy transfer in polydisperse mixtures of particles with different temperatures

Efe Ilker, Michele Castellana, and Jean-François Joanny

Phys. Rev. Research 3, 023207 (2021) - Published 14 June, 2021

The authors investigate the long-time transport properties of individual particles in nonequilibrium systems and show how the energy transfer and transport coefficients are determined by the composition of the mixture.

When network bridges foster consensus. Bounded confidence models in networked societies

Hendrik Schawe, Sylvain Fontaine, and Laura Hernández

Phys. Rev. Research 3, 023208 (2021) - Published 14 June, 2021

This article shows that random networks foster consensus in a bounded confidence opinion dynamics model by bringing together groups of agents whose difference of opinions is too large for them to interact, using the bridges in the network.

Generative model for reciprocity and community detection in networks

Hadiseh Safdari, Martina Contisciani, and Caterina De Bacco

Phys. Rev. Research 3, 023209 (2021) - Published 14 June, 2021

The authors propose a generative model for capturing community and reciprocity patterns in directed networks.

Symmetry-protected topological phases in spinful bosons with a flat band

Hong Yang, Hayate Nakano, and Hosho Katsura

Phys. Rev. Research 3, 023210 (2021) - Published 14 June, 2021

The authors study the many-body topological phases in ultracold integer-spin atoms and provide their ground states.

Floquet π mode engineering in non-Hermitian waveguide lattices

Shengjie Wu, Wange Song, Shenglun Gao, Yuxin Chen, Shining Zhu, and Tao Li

Phys. Rev. Research 3, 023211 (2021) - Published 15 June, 2021

This paper shows that non-Hermiticity by loss can induce topological phase transition of a Floquet system .

Entanglement clustering for ground-stateable quantum many-body states

Michael Matty, Yi Zhang, T. Senthil, and Eun-Ah Kim

Phys. Rev. Research 3, 023212 (2021) - Published 16 June, 2021

The authors present an entanglement clustering method to separate ground-stateable wave functions from non-groundstateable wave functions using data collected from an ensemble of swap operators.

Entanglement dualities in supersymmetry

Robert H. Jonsson, Lucas Hackl, and Krishanu Roychowdhury

Phys. Rev. Research 3, 023213 (2021) - Published 16 June, 2021

The authors produce a mapping between the bosonic and fermionic part of a quadratic SUSY Hamiltonian using the system’s supercharge.

Quantum coherence as a signature of chaos

Namit Anand, Georgios Styliaris, Meenu Kumari, and Paolo Zanardi

Phys. Rev. Research 3, 023214 (2021) - Published 17 June, 2021

The authors propose connections between the resource theory of quantum coherence and various signatures of chaotic quantum systems.

Predicting high-dimensional heterogeneous time series employing generalized local states

Sebastian Baur and Christoph Räth

Phys. Rev. Research 3, 023215 (2021) - Published 17 June, 2021

The authors introduce the concept of generalized local states, a method to define similarity-distances between arbitrary time series. They demonstrate its capabilities for the prediction of complex, high-dimensional data using the reservoir computing paradigm.

Evolution of topological defects at two sequential phase transitions of Nd2SrFe2O7

Fei-Ting Huang, Yanbin Li, Fei Xue, Jae-Wook Kim, Lunyong Zhang, Ming-Wen Chu, Long-Qing Chen, and Sang-Wook Cheong

Phys. Rev. Research 3, 023216 (2021) - Published 21 June, 2021

This paper explores the topological defect evolution in the presence of spontaneous distortion, traversing successive second-order and first-order phase transitions in a bilayered ferrite.

Selective excitation of subwavelength atomic clouds

Rasoul Alaee, Akbar Safari, and Robert W. Boyd

Phys. Rev. Research 3, 023217 (2021) - Published 21 June, 2021

The authors provide a theoretical approach to model both coherent and incoherent scattering in atomic clouds and to control the cooperative effects through structured light.

Phase-amplitude coupling in neuronal oscillator networks

Yuzhen Qin, Tommaso Menara, Danielle S. Bassett, and Fabio Pasqualetti

Phys. Rev. Research 3, 023218 (2021) - Published 21 June, 2021

This paper studies the emergence of phase-amplitude coupling in nonlinearly coupled Stuart-Landau oscillators and characterize how structural parameters modulate the intensity of phase-amplitude coupling.

Long-range spin transport on the surface of topological Dirac semimetal

Yasufumi Araki, Takahiro Misawa, and Kentaro Nomura

Phys. Rev. Research 3, 023219 (2021) - Published 21 June, 2021

The authors theoretically study spin transport on the surface of topological Dirac semimetal with both the analytical transport theory and the numerical simulation.

Decoupling of lattice and orbital degrees of freedom in an iron-pnictide superconductor

C. E. Matt, O. Ivashko, M. Horio, J. Choi, Q. Wang, D. Sutter, N. Dennler, M. H. Fischer, S. Katrych, L. Forro, J. Ma, B. Fu, B. Q. Lv, M. v. Zimmermann, T. K. Kim, N. C. Plumb, N. Xu, M. Shi, and J. Chang

Phys. Rev. Research 3, 023220 (2021) - Published 21 June, 2021

This article describes the observation of a structural phase in superconducting Pr4Fe2As2Te0.88O4, which is not electronically driven.

Transmission amplitude through a Coulomb blockaded Majorana wire

Matthias Thamm and Bernd Rosenow

Phys. Rev. Research 3, 023221 (2021) - Published 21 June, 2021

The authors consider the amplitude of coherent transmission through Coulomb-blockaded Majorana wires as a function of Zeeman field.

Generating nonlinearities from conditional linear operations, squeezing, and measurement for quantum computation and super-Heisenberg sensing

Mattias T. Johnsson, Pablo M. Poggi, Marco A. Rodriguez, Rafael N. Alexander, and Jason Twamley

Phys. Rev. Research 3, 023222 (2021) - Published 21 June, 2021

The authors develop a protocol to square any unknown Hamiltonian and apply it to prepare nonclassical bosonic states

Neural network perturbation theory and its application to the Born series

Bastian Kaspschak and Ulf-G. Meißner

Phys. Rev. Research 3, 023223 (2021) - Published 21 June, 2021

The authors propose a neural network perturbation theory and use it to construct a machine-learned second-order Born approximation for S-wave scattering lengths.

Hybrid-type synchronization transitions: Where incipient oscillations, scale-free avalanches, and bistability live together

Victor Buendía, Pablo Villegas, Raffaella Burioni, and Miguel A. Muñoz

Phys. Rev. Research 3, 023224 (2021) - Published 21 June, 2021

This paper analyzes what type of phase transitions from synchronous to asynchronous phases are able to exhibit concomitantly scale-free avalanches of synchronized activity right at their critical point, discussing the possible relevance of them in neuroscience.

Majority gate for two-dimensional ferromagnets lacking inversion symmetry

Nikolaos Ntallis, Anders Bergman, Anna Delin, Olle Eriksson, Erik Sjöqvist, Danny Thonig, and Manuel Pereiro

Phys. Rev. Research 3, 023225 (2021) - Published 21 June, 2021

This paper studies a majority gate prototype based on merons and antimerons.

Full characterization of the transmission properties of a multi-plane light converter

Pauline Boucher, Arthur Goetschy, Giacomo Sorelli, Mattia Walschaers, and Nicolas Treps

Phys. Rev. Research 3, 023226 (2021) - Published 21 June, 2021

This work characterizes the transmission properties of a multi-plane light converter and shows that, in the regime of a large number of shaped modes, such systems exhibit a behavior similar to a random scattering medium.

Neutron-state entanglement with overlapping paths

S. J. Kuhn, S. McKay, J. Shen, N. Geerits, R. M. Dalgliesh, E. Dees, A. A. M. Irfan, F. Li, S. Lu, V. Vangelista, D. V. Baxter, G. Ortiz, S. R. Parnell, W. M. Snow, and R. Pynn

Phys. Rev. Research 3, 023227 (2021) - Published 22 June, 2021

The authors demonstrate that the spin and path subsystems of individual neutrons in a beam can be mode-entangled with nanometer separations between paths.

Efficient estimation of multipartite quantum coherence

Qi-Ming Ding, Xiao-Xu Fang, Xiao Yuan, Ting Zhang, and He Lu

Phys. Rev. Research 3, 023228 (2021) - Published 22 June, 2021

The authors show an estimation of multipartite quantum coherence using simple measurements.

Identifying nonclassicality from experimental data using artificial neural networks

Valentin Gebhart, Martin Bohmann, Karsten Weiher, Nicola Biagi, Alessandro Zavatta, Marco Bellini, and Elizabeth Agudelo

Phys. Rev. Research 3, 023229 (2021) - Published 22 June, 2021

The authors use machine learning methods to identify nonclassicality from experimental data obtained via homodyne detection, opening the possibility for fast sorting and direct monitoring of quantum light in experiments.

Neural Monte Carlo renormalization group

Jui-Hui Chung and Ying-Jer Kao

Phys. Rev. Research 3, 023230 (2021) - Published 22 June, 2021

The authors use a deep learning architecture to design a real-space renormalization group transformation for studying critical phenomena in which the coarse graining scheme can be learned.

Strong and fast rising pressure waves emitted by plasmonic vapor nanobubbles

Julien Lombard, Julien Lam, François Detcheverry, Thierry Biben, and Samy Merabia

Phys. Rev. Research 3, 023231 (2021) - Published 22 June, 2021

This work shows that the generation of plasmonic nanobubbles is accompanied by pressure waves that combine a strong intensity and a short rising time.

Stable humplike Hall effect and noncoplanar spin textures in SrRuO3 ultrathin films

Byungmin Sohn, Bongju Kim, Se Young Park, Hwan Young Choi, Jae Young Moon, Taeyang Choi, Young Jai Choi, Hua Zhou, Jun Woo Choi, Alessandro Bombardi, Dan. G. Porter, Seo Hyoung Chang, Jung Hoon Han, and Changyoung Kim

Phys. Rev. Research 3, 023232 (2021) - Published 22 June, 2021

The authors observe hump-like features in Hall resistance emergent in SrRuO3 ultrathin films and investigate their origin using X-rays.

Coherence control in helium-ion ensembles

Saad Mehmood, Eva Lindroth, and Luca Argenti

Phys. Rev. Research 3, 023233 (2021) - Published 22 June, 2021

The authors show how an attosecond XUV-pump IR-probe sequence can be used to ionize the helium atom and create a polarized ion whose coherence is controllable through the pump-probe delay and can be reconstructed from the picosecond fluctuations of the ionic dipole caused by fine-structure interactions.

Quantum Kolmogorov-Sinai entropy and Pesin relation

Tomer Goldfriend and Jorge Kurchan

Phys. Rev. Research 3, 023234 (2021) - Published 22 June, 2021

The authors derive two expressions for the quantum Kolmogorov-Sinai entropy and show that it is unambiguously defined only when there is a divergent gap between Ehrenfest and microscopic time.

Quantum Rayleigh problem and thermocoherent Onsager relations

Onur Pusuluk and Özgür E. Müstecaplıoğlu

Phys. Rev. Research 3, 023235 (2021) - Published 22 June, 2021

The authors study the reciprocal relations between the flows of heat and quantum coherence and the anomalous behavior observed in quantum thermodynamic systems.

Three-dimensional isometric tensor networks

Maurits S. J. Tepaske and David J. Luitz

Phys. Rev. Research 3, 023236 (2021) - Published 22 June, 2021

The authors introduce and benchmark a tensor-network method for the simulation of three-dimensional quantum many-body systems

Anticipating synchronization with machine learning

Huawei Fan, Ling-Wei Kong, Ying-Cheng Lai, and Xingang Wang

Phys. Rev. Research 3, 023237 (2021) - Published 22 June, 2021

The authors find that the reservoir computer trained by the time series acquired at several asynchronous states is able to predict the entire transition from desynchronization to synchronization systems of coupled oscillators.

Pumping current in a non-Markovian N-state model

Ville M. M. Paasonen and Hisao Hayakawa

Phys. Rev. Research 3, 023238 (2021) - Published 22 June, 2021

The authors study a periodically driven N-state system with memory and elucidate the non-Markovian effect on the pumping current induced by the driving.

Contribution of electronic entropy to the order-disorder transition of Cu3Au

J. Paras and A. Allanore

Phys. Rev. Research 3, 023239 (2021) - Published 22 June, 2021

The authors evaluate the electronic entropy change from transport measurements across the order-disorder transition in Cu3Au.

Short-range correlations and the nuclear EMC effect in deuterium and helium-3

E. P. Segarra, J. R. Pybus, F. Hauenstein, D. W. Higinbotham, G. A. Miller, E. Piasetzky, A. Schmidt, M. Strikman, L. B. Weinstein, and O. Hen

Phys. Rev. Research 3, 023240 (2021) - Published 22 June, 2021

This paper studies the EMC effect in deuterium and helium-3 in a framework that allows isolating the impact of high-momentum nucleons in short-ranged correlated pairs.

Linguistic evolution driven by network heterogeneity and the Turing mechanism

Sayat Mimar, Mariamo Mussa Juane, Jorge Mira, Juyong Park, Alberto P. Muñuzuri, and Gourab Ghoshal

Phys. Rev. Research 3, 023241 (2021) - Published 22 June, 2021

The authors develop a framework combining spatial networks, pattern formation and heterogeneities in how populations perceive languages to reproduce linguistic co-existence in two independent European regions.

Superradiant scattering of orbital angular momentum beams

Cisco Gooding, Silke Weinfurtner, and William G. Unruh

Phys. Rev. Research 3, 023242 (2021) - Published 24 June, 2021

This paper describes the theory behind the superradiance of sound when reflecting off a rotating disk.

Direct experimental test of commutation relation via imaginary weak value

Richard Wagner, Wenzel Kersten, Armin Danner, Hartmut Lemmel, Alok Kumar Pan, and Stephan Sponar

Phys. Rev. Research 3, 023243 (2021) - Published 24 June, 2021

The authors introduce and realize a scheme, allowing for a direct test of the canonical commutation relation, by measuring the imaginary part of the weak value of a suited path-qubit observable in a neutron interferometric experiment.

Calculating nonadiabatic couplings and Berry's phase by variational quantum eigensolvers

Shiro Tamiya, Sho Koh, and Yuya O. Nakagawa

Phys. Rev. Research 3, 023244 (2021) - Published 24 June, 2021

The authors propose a way to calculate the nonadiabatic couplings of molecules and Berry’s phase of quantum systems by using the result of the variational quantum eigensolvers.

Correlations of stripe phase in one-dimensional spin-orbit coupled Bose gas

Clemens Staudinger, Martin Panholzer, and Robert E. Zillich

Phys. Rev. Research 3, 023245 (2021) - Published 25 June, 2021

The authors study the interplay between interaction effects and the spin-orbit induced density oscillations of the stripe phase by taking quantum fluctuations into account.

Learning quantum Hamiltonians from single-qubit measurements

Liangyu Che, Chao Wei, Yulei Huang, Dafa Zhao, Shunzhong Xue, Xinfang Nie, Jun Li, Dawei Lu, and Tao Xin

Phys. Rev. Research 3, 023246 (2021) - Published 25 June, 2021

The authors propose a machine learning method to characterize system Hamiltonians from only single-qubit Pauli measurements.

Controlling quantum systems with modulated electron beams

Dennis Rätzel, Daniel Hartley, Osip Schwartz, and Philipp Haslinger

Phys. Rev. Research 3, 023247 (2021) - Published 28 June, 2021

This paper shows that the nonradiative electromagnetic near-field of a temporally modulated free-space electron beam can be utilized for coherent control of quantum systems.

Einstein-de Haas effect of topological magnons

Jun Li, Trinanjan Datta, and Dao-Xin Yao

Phys. Rev. Research 3, 023248 (2021) - Published 28 June, 2021

The authors predict the existence of the Einstein-de Haas effect of topological magnons in the square octagon, kagome, and the honeycomb lattices.

Opinion dynamics on tie-decay networks

Kashin Sugishita, Mason A. Porter, Mariano Beguerisse-Díaz, and Naoki Masuda

Phys. Rev. Research 3, 023249 (2021) - Published 28 June, 2021

The authors examine the convergence speed of opinion dynamics on tie-decay networks in terms of the spectral gap of a time-dependent Laplacian matrix.

Tracking ultrafast solid-state dynamics using high harmonic spectroscopy

Mina R. Bionta, Elissa Haddad, Adrien Leblanc, Vincent Gruson, Philippe Lassonde, Heide Ibrahim, Jérémie Chaillou, Nicolas Émond, Martin R. Otto, Álvaro Jiménez-Galán, Rui E. F. Silva, Misha Ivanov, Bradley J. Siwick, Mohamed Chaker, and François Légaré

Phys. Rev. Research 3, 023250 (2021) - Published 28 June, 2021

The authors investigate the dynamics of the photoinduced phase transitions in the strongly correlated material, vanadium dioxide, using time-resolved high harmonic spectroscopy.

Practical quantum encryption protocol with varying encryption configurations

Junxu Li, Zixuan Hu, and Sabre Kais

Phys. Rev. Research 3, 023251 (2021) - Published 28 June, 2021

The authors develop a quantum encryption protocol based on varying encryption configurations and apply it to a model for the English alphabet.

Response theory for nonequilibrium steady states of open quantum systems

Amikam Levy, Eran Rabani, and David T. Limmer

Phys. Rev. Research 3, 023252 (2021) - Published 28 June, 2021

The authors develop a response theory for perturbed open quantum systems that predicts different response relations of their closed or classical counterparts.

Formation and propagation of solitonlike defect clusters in confined active nematics with chiral anchoring

Zhong-Yi Li, De-Qing Zhang, and Bo Li

Phys. Rev. Research 3, 023253 (2021) - Published 28 June, 2021

The authors show that active nematics confined in channels with chiral anchoring can generate cohesive topological defect clusters, which undergo periodic structural reconfiguration locally and energy oscillations and are transported directionally in a soliton-like form.

Structure and dynamics of dense colloidal ellipsoids at the nearest-neighbor length scale

Antara Pal, Md. Arif Kamal, Peter Holmqvist, and Peter Schurtenberger

Phys. Rev. Research 3, 023254 (2021) - Published 29 June, 2021

The authors investigate the effect of particle shape in the onset of the glass transition using tailor-made anisotropic colloids of ellipsoidal shape and X-ray photon correlation spectroscopy (XPCS),

SINDy-BVP: Sparse identification of nonlinear dynamics for boundary value problems

Daniel E. Shea, Steven L. Brunton, and J. Nathan Kutz

Phys. Rev. Research 3, 023255 (2021) - Published 29 June, 2021

This article develops a data-driven model discovery and system identification technique for spatially-dependent boundary value problems to infer both the operator and spatially-dependent parameters that describe the heterogenous, physical quantities of a system.

Applications of deep learning to relativistic hydrodynamics

Hengfeng Huang, Bowen Xiao, Ziming Liu, Zeming Wu, Yadong Mu, and Huichao Song

Phys. Rev. Research 3, 023256 (2021) - Published 30 June, 2021

The authors propose a deep learning network which can capture the main feature of the non-linear evolution of hydrodynamics without the knowledge of conservation laws.

Measure for characterizing heavy-tailed networks

Sam A. Hill

Phys. Rev. Research 3, 023257 (2021) - Published 30 June, 2021

This paper introduces the Cooke-Nieboer Index to identify networks with heavy-tailed degree distributions which is non-asymptotic and does not presume a power-law form.

ERRATA

Erratum: Atomic-waveguide quantum electrodynamics [Phys. Rev. Research 2, 043213 (2020)]

Stuart J. Masson and Ana Asenjo-Garcia

Phys. Rev. Research 3, 029001 (2021) - Published 22 April, 2021

Erratum: Magnetic mixed valent semimetal EuZnSb2 with Dirac states in the band structure [Phys. Rev. Research 2, 033462 (2020)]

Aifeng Wang (王爱峰), Sviatoslav Baranets, Yu Liu (刘育), Xiao Tong, E. Stavitski, Jing Zhang, Yisheng Chai, Wei-Guo Yin (尹卫国), Svilen Bobev, and C. Petrovic

Phys. Rev. Research 3, 029002 (2021) - Published 26 April, 2021

Erratum: Z2 characterization for three-dimensional multiband Hubbard models [Phys. Rev. Research 2, 013299 (2020)]

Bernhard Irsigler, Jun-Hui Zheng, Fabian Grusdt, and Walter Hofstetter

Phys. Rev. Research 3, 029004 (2021) - Published 18 May, 2021

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