Browse Issues:

HIGHLIGHTED ARTICLES

Exotic pairing state in quasicrystalline superconductors under a magnetic field

Shiro Sakai and Ryotaro Arita

Phys. Rev. Research 1, 022002(R) (2019) - Published 3 September, 2019

In this study, the authors find exotic superconductivity emerging in quasicrystals under magnetic field, where the Cooper pairs change its sign in real space following the underlying quasiperiodic structure. This is in agreement with recent theory and experimental work.

Collective dynamics and conformal ordering in electrophoretically driven nematic colloids

Arthur V. Straube, Josep M. Pagès, Pietro Tierno, Jordi Ignés-Mullol, and Francesc Sagués

Phys. Rev. Research 1, 022008(R) (2019) - Published 30 September, 2019

The rich collective dynamics of microscopic non-spherical particles driven through liquid crystals results from the balance of different physical interactions. This paper shows the fundamental role of hydrodynamics in the assembly of phoretic colloids that display emergent conformal order

Dynamic acousto-optical control of confined polariton condensates: From single traps to coupled lattices

Alexander S. Kuznetsov, Klaus Biermann, and Paulo V. Santos

Phys. Rev. Research 1, 023030 (2019) - Published 26 September, 2019

This paper demonstrates the full dynamic control of on-site energies, the inter-site coupling, as well as the dispersion of lattices of polariton condensates using electrically excited acoustic waves. The spatially and time-dependent acoustic modulation is essentially independent of polariton density, thus making the acoustic modulation applicable to large lattices as well as to the single polariton limit.

RAPID COMMUNICATIONS

Continuity and discontinuity of kirigami's high-extensibility transition: A statistical-physics viewpoint

Midori Isobe and Ko Okumura

Phys. Rev. Research 1, 022001(R) (2019) - Published 3 September, 2019

A theory of kirigami’s high-extensibility transition shows a striking analogy with Landau theory of continuous transitions, if a rotation angle and elongation of kirigami are regarded as the order parameter and the inverse temperature.

Exotic pairing state in quasicrystalline superconductors under a magnetic field

Shiro Sakai and Ryotaro Arita

Phys. Rev. Research 1, 022002(R) (2019) - Published 3 September, 2019

In this study, the authors find exotic superconductivity emerging in quasicrystals under magnetic field, where the Cooper pairs change its sign in real space following the underlying quasiperiodic structure. This is in agreement with recent theory and experimental work.

Hopf characterization of two-dimensional Floquet topological insulators

F. Nur Ünal, André Eckardt, and Robert-Jan Slager

Phys. Rev. Research 1, 022003(R) (2019) - Published 9 September, 2019

This paper shows that the dynamics of two-band systems can be characterized by Hopf maps, where the winding numbers are cast as linking numbers. This finding opens the doors towards both the investigation of Hopf insulators in experiments with ultracold atoms in driven optical lattices and the measurement of Floquet topological invariants via the observation of post quench-dynamics

Single-photon-level light storage in cold atoms using the Autler-Townes splitting protocol

Erhan Saglamyurek, Taras Hrushevskyi, Logan Cooke, Anindya Rastogi, and Lindsay J. LeBlanc

Phys. Rev. Research 1, 022004(R) (2019) - Published 11 September, 2019

In this paper, the authors experimentally demonstrate ultra-low noise storage of single-photon-level light in cold atoms by exploring the exceptional robustness of the Autler-Townes-splitting memory protocol to various noise processes and decoherence in the regime of high-speed operation.

Cyclotron orbit knot and tunable-field quantum Hall effect

Yi Zhang

Phys. Rev. Research 1, 022005(R) (2019) - Published 16 September, 2019

This paper shows a microscopic model of a Weyl semimetal that realizes Weyl orbit with the topology of a Trefoil knot. The nontrivial topology allows the commonly trivial magnetic field line along the orbit to contribute a Berry phase and alter the conditions of the quantum Hall effect.

Long-lived circulating currents in strongly correlated nanorings

B. M. Schoenauer, N. M. Gergs, P. Schmitteckert, F. Evers, and D. Schuricht

Phys. Rev. Research 1, 022006(R) (2019) - Published 17 September, 2019

This paper discovers long-lived currents in non-equilibrium nanorings that originate from long-lived oscillations between two charge density wave states. The decay rate of these ring currents is found to be strongly suppressed by interactions. It can take values orders of magnitude smaller than the usual lead-induced level broadening.

Ultrafast dynamics in monolayer transition metal dichalcogenides: Interplay of dark excitons, phonons, and intervalley exchange

Malte Selig, Florian Katsch, Robert Schmidt, Steffen Michaelis de Vasconcellos, Rudolf Bratschitsch, Ermin Malic, and Andreas Knorr

Phys. Rev. Research 1, 022007(R) (2019) - Published 26 September, 2019

The authors present a microscopic explanation for the bleaching at the excitonic B transition in monolayers of transition metal dichalcogenides, based on the joint action of exchange coupling and phonon-mediated thermalization into dark exciton states. The paper shows how intra- and intervalley coupling on a femtosecond timescale governs the optical valley response of 2D semiconductors.

Collective dynamics and conformal ordering in electrophoretically driven nematic colloids

Arthur V. Straube, Josep M. Pagès, Pietro Tierno, Jordi Ignés-Mullol, and Francesc Sagués

Phys. Rev. Research 1, 022008(R) (2019) - Published 30 September, 2019

The rich collective dynamics of microscopic non-spherical particles driven through liquid crystals results from the balance of different physical interactions. This paper shows the fundamental role of hydrodynamics in the assembly of phoretic colloids that display emergent conformal order

ARTICLES

Naturalness versus stringy naturalness with implications for collider and dark matter searches

Howard Baer, Vernon Barger, and Shadman Salam

Phys. Rev. Research 1, 023001 (2019) - Published 3 September, 2019

This paper studies the notion of “Stringy naturalness” and how it lifts the Higgs boson mass to the 125 GeV range whilst also lifting sparticle masses beyond LHC search limits. As a consequence, SUSY may be revealed at high luminosity LHC via the presence of light higgsinos of mass ~100-300 GeV while a higher energy LHC upgrade may be required to access gluinos and top squarks.

Composite non-Abelian strings with Grassmannian models on the worldsheet

Edwin Ireson, Mikhail Shifman, and Alexei Yung

Phys. Rev. Research 1, 023002 (2019) - Published 4 September, 2019

This paper shows how internal color degrees of freedom living on the world sheet of non-Abelian string exist no longer in complex projective space but a more general type of space, called the Grassmannian manifold. The dynamics of the sigma model for the low-energy fluctuations of this string are then analyzed, down to the quantum level.

Transmon qubit in a magnetic field: Evolution of coherence and transition frequency

Andre Schneider, Tim Wolz, Marco Pfirrmann, Martin Spiecker, Hannes Rotzinger, Alexey V. Ustinov, and Martin Weides

Phys. Rev. Research 1, 023003 (2019) - Published 4 September, 2019

Quantum bits require isolation from outer fields to maintain their coherence, and the superconducting state is destroyed by magnetic fields. In this work, however, the authors measure a superconducting transmon qubit in relatively large magnetic fields. By demonstrating quantum coherence up to field values of 40mT, new avenues in hybrid systems and sensing applications based on superconducting quantum circuits are opened up.

Determination of universal critical exponents using Lee-Yang theory

Aydin Deger and Christian Flindt

Phys. Rev. Research 1, 023004 (2019) - Published 4 September, 2019

This article presents a pathway from measurements of partition function zeros to the determination of critical points and universal critical exponents of continuous phase transitions. The method is illustrated in ferromagnetism, but can be applied to other physical systems.

Optical manifestations of domains with constant topological charge density

Evan Stewart and Kirill Tuchin

Phys. Rev. Research 1, 023005 (2019) - Published 6 September, 2019

This paper studies the influence of temporal variations of the topological charge density. The authors focus on how this chiral anomaly manifest itself more dominantly through the boundary conditions and show this in two optics examples.

Control of the transient subdiffusion exponent at short and long times

Aleksander Stanislavsky and Aleksander Weron

Phys. Rev. Research 1, 023006 (2019) - Published 6 September, 2019

By using independent types of traps with heavy-tailed waiting times, this paper shed light on the transition between diffusive regimes, as characterized by different exponents in the mean squared displacement at short and long times. The authors show that this can be further utilized to engineer the asymptotic behavior of the mean squared displacement by changing the properties of the traps.

Elasticity tetrads, mixed axial-gravitational anomalies, and (3+1)-d quantum Hall effect

J. Nissinen and G. E. Volovik

Phys. Rev. Research 1, 023007 (2019) - Published 6 September, 2019

This paper extends the theory of the intrinsic or anomalous quantum Hall effect to three-dimensional deformed crystalline topological insulators using geometric tetrad fields related to elastic deformations. The three-dimensional Hall effect implies mixed elastic-electromagnetic quantum anomalies that are reminiscent of axial-gravitational anomalies of relativistic quantum field theory for gapped fermions.

Dynamics of nested, self-similar winnerless competition in time and space

Maximilian Voit and Hildegard Meyer-Ortmanns

Phys. Rev. Research 1, 023008 (2019) - Published 6 September, 2019

Nested self-similar structures are frequently found in nature. This work shows how to choose microscopic rules of competition so that this kind of dynamics results by construction. Hierarchies in time scales emerge that lead to an iterated modulation of fast oscillations via slower ones, while hierarchies in spatial scales show up as nested spirals on a grid.

Confinement of two-body systems and calculations in d dimensions

E. Garrido and A. S. Jensen

Phys. Rev. Research 1, 023009 (2019) - Published 6 September, 2019

This paper studies the equivalency between applying a potential to a system to reduce its dimension and a dimension-dependent centrifugal barrier contained in the Schrödinger equation. The authors explore this for a two-body system and show the existence of a unique universal relation between results from these two methods.

Origami lattices and folding-induced lattice transformations

Hongbin Fang, Suyi Li, Manoj Thota, and K. W. Wang

Phys. Rev. Research 1, 023010 (2019) - Published 9 September, 2019

This papers shows that origami can be used as a versatile scaffold to construct 2D and 3D Bravais lattices, and continuously transform them between different symmetric configurations via folding.

Coexistence of orbital and quantum critical magnetoresistance in FeSe1xSx

S. Licciardello, N. Maksimovic, J. Ayres, J. Buhot, M. Čulo, B. Bryant, S. Kasahara, Y. Matsuda, T. Shibauchi, V. Nagarajan, J. G. Analytis, and N. E. Hussey

Phys. Rev. Research 1, 023011 (2019) - Published 10 September, 2019

This paper studies the magnetoresistance of FeSe1-xSx as a function of sulfur doping, which goes through a quantum critical point characterized by electron nematicity. The experiments show a coexistence of a quadratic and a linear form of the magneto-resistance. These findings suggest that the low-lying electronic excitations in a quantum critical metal may have dual character, one that is coherent and one that is quantum critical

Asymmetry in repeated isotropic rotations

Malte Schröder and Marc Timme

Phys. Rev. Research 1, 023012 (2019) - Published 10 September, 2019

Uniform random rotations map a point on the sphere uniformly to any other point. In two dimensions, repeating the same rotation twice results again in a uniform distribution. However, such double rotations in three dimensions result in an asymmetric distribution of the image. By deconstructing this operation, the authors show an intuitive explanation for this asymmetry and why it decays with increasing dimension, disappearing again in infinite dimensions

Probing non-Hermitian skin effect and non-Bloch phase transitions

Stefano Longhi

Phys. Rev. Research 1, 023013 (2019) - Published 11 September, 2019

This paper uncovers a bulk probing method to catch physical effects hindered in topological non-Hermitian crystals. The method is based on Lyapunov exponent calculation of a quantum walker on the lattice and can reveal non-Bloch phase transitions, the non-Hermitian skin effect and breakdown of the bulk-boundary correspondence.

Time-modulated meta-atoms

G. Ptitcyn, M. S. Mirmoosa, and S. A. Tretyakov

Phys. Rev. Research 1, 023014 (2019) - Published 12 September, 2019

The authors develop a theoretical model of meta-atoms which can be arbitrarily modulated in time and show how to realize a non-scattering regime of a single meta-atom which stores all the incident energy in its near fields.

Pseudogap, van Hove singularity, maximum in entropy, and specific heat for hole-doped Mott insulators

A. Reymbaut, S. Bergeron, R. Garioud, M. Thénault, M. Charlebois, P. Sémon, and A.-M. S. Tremblay

Phys. Rev. Research 1, 023015 (2019) - Published 13 September, 2019

The decrease of the spin susceptibility below a doping-dependent temperature is a signature of the problem of the pseudogap in cuprate superconductors. This paper proposes that the pseudogap is a finite-doping extension of the Mott transition where near-neighbor singlet correlations play a crucial role and propose several experimental tests to check on this prediction.

High-harmonic generation at the nanoscale boosted by bound states in the continuum

Luca Carletti, Sergey S. Kruk, Andrey A. Bogdanov, Costantino De Angelis, and Yuri Kivshar

Phys. Rev. Research 1, 023016 (2019) - Published 13 September, 2019

This paper combines the concept of bound states in the continuum with engineering of epsilon-near-zero substrates to boost multi-frequency and multi-step cascaded nonlinear processes at the nanoscale. High-order nonlinear processes such as four-wave mixing, third- and fifth-harmonic generation in all-dielectric subwavelength resonators are shown to be enhanced in comparison with the state-of-the-art results.

Shape-shifting polyhedral droplets

Pierre A. Haas, Diana Cholakova, Nikolai Denkov, Raymond E. Goldstein, and Stoyan K. Smoukov

Phys. Rev. Research 1, 023017 (2019) - Published 16 September, 2019

Oil droplets in aqueous surfactant solutions flatten into a host of polyhedral and polygonal shapes on slow cooling. These intriguing transformations promise novel synthesis methods for small polymeric particles. This paper reveals an intermediate octahedral stage that explain how icosahedral droplets flatten into polygonal platelets.

Torsional effects in strong-field ionization of molecules

Andrey I. Dnestryan, Oleg I. Tolstikhin, Frank Jensen, and Lars Bojer Madsen

Phys. Rev. Research 1, 023018 (2019) - Published 17 September, 2019

This paper elucidates effects of torsional motion on tunneling ionization in intense laser fields. Recent advances in the formulation and implementation of an integral representation of the weak-field asymptotic theory make it possible to study the behavior of the tunneling ionization rate with the dihedral angle between the two planes in biphenyl and substituted biphenyl molecules. These results have implications for control of torsional motion and deracemization schemes for axial chiral molecules.

Dynein catch bond as a mediator of codependent bidirectional cellular transport

Palka Puri, Nisha Gupta, Sameep Chandel, Supriyo Naskar, Anil Nair, Abhishek Chaudhuri, Mithun K. Mitra, and Sudipto Muhuri

Phys. Rev. Research 1, 023019 (2019) - Published 18 September, 2019

The authors show the existence of an internal regulatory mechanism for intracellular cargo transport arising from the unique “catchbond” behavior of dynein motors which can in turn give rise to coordinated transport. This appears to resolve the observed paradox by which inhibiting the activity of one type of motor results in an overall decline in the motility of the cellular cargo in both directions.

Multiple-scale perturbation method on integro-differential equations: Application to continuous-time quantum walks on regular networks in non-Markovian reservoirs

Xiangyi Meng, Yang Li, Jian-Wei Zhang, Hong Guo, and H. Eugene Stanley

Phys. Rev. Research 1, 023020 (2019) - Published 19 September, 2019

The authors introduce a new multiple-scale perturbation method that works on integro-differential equations. The method is particularly useful for studying general non-Markovian effects. They propose an open-system model of a continuous-time quantum walk on different network topologies and show that non-Markovianity can, indeed, speed up the quantum walk.

Quantum entanglement between two magnon modes via Kerr nonlinearity driven far from equilibrium

Zhedong Zhang, Marlan O. Scully, and Girish S. Agarwal

Phys. Rev. Research 1, 023021 (2019) - Published 19 September, 2019

This paper shows a mechanism to produce entanglement between magnons via Kerr nonlinearity. The authors sudty this in a system of two YIG spheres and propose that the scheme can be extended to other systems.

Condensation versus ordering: From the spherical models to Bose-Einstein condensation in the canonical and grand canonical ensemble

A. Crisanti, A. Sarracino, and M. Zannetti

Phys. Rev. Research 1, 023022 (2019) - Published 20 September, 2019

This paper shows that Bose-Einstein condensates in canonical and grand-canonical conditions stands for different phenomena: the familiar ordering transition in the former opposed to condensation of fluctuations without any ordering in the latter. The authors connect this to recent experiments that show Bose-Einstein condensates in a gas of photons.

Quantum state preparation for coupled period tripling oscillators

Niels Lörch, Yaxing Zhang, Christoph Bruder, and M. I. Dykman

Phys. Rev. Research 1, 023023 (2019) - Published 23 September, 2019

An anharmonic oscillator driven at triple its eigenfrequency has three equivalent vibrational states in addition to a quiet state. In an array of coupled oscillators the degeneracy of the vibrational states of individual oscillators is broken. This article investigates the quantum phase transition to the broken-symmetry state. It also studies the steady state of a single quantum dissipative oscillator.

Theory of spike-train power spectra for multidimensional integrate-and-fire neurons

Sebastian Vellmer and Benjamin Lindner

Phys. Rev. Research 1, 023024 (2019) - Published 23 September, 2019

This paper presents a theoretical framework for the spike-train power spectrum of colored-noise driven neurons with spike-frequency adaptation and test this theory against stochastic simulation in various cases. The authors also extend and verify the theory for neurons coupled in a random network, in which the correlations of input fluctuations and of the generated spike train are self-consistently related.

Variational quantum eigensolver with fewer qubits

Jin-Guo Liu, Yi-Hong Zhang, Yuan Wan, and Lei Wang

Phys. Rev. Research 1, 023025 (2019) - Published 24 September, 2019

Scalability in a variatonal quantum eigensolver is limited by both the number of qubits available and the gradient vanishing problem. This paper shows several types of tensor network inspired circuit ansatzes. These are area law entangled, qubit efficient, and experimentally feasible while not having exponential contraction complexity problem as in their classical counterpart.

Activity induced synchronization: Mutual flocking and chiral self-sorting

D. Levis, I. Pagonabarraga, and B. Liebchen

Phys. Rev. Research 1, 023026 (2019) - Published 24 September, 2019

This paper studies oscillators that move on a plane while oscillating in their direction of motion. The onset of activity induces new routes for synchronization that give rise to particular behaviors such as the emergence of coherent flocks, or a self-segregation of oscillators of opposite chirality into large counterrotating clusters.

Signatures of quantized coupling between quantum emitters and localized surface plasmons

Chun-Jie Yang, Jun-Hong An, and Hai-Qing Lin

Phys. Rev. Research 1, 023027 (2019) - Published 25 September, 2019

This paper proposes a mechanism to overcome the loss effect on localized surface plasmons during their interactions with the quantum emitters (QEs). The authors find distinctive signatures of quantized couplings in the long-time limit and attribute them to the different numbers of bound states formed by the combined system.

Multilayered dipolar particles in an external magnetic field

Ludovic Spiteri, Hervé Mohrbach, and René Messina

Phys. Rev. Research 1, 023028 (2019) - Published 25 September, 2019

This paper examines the effect of an external magnetic on the crystallization and magnetization of layered dipolar particles. Exact results are provided for monolayers and bilayers where it is shown that increasing the layer thickness provides enhanced cohesion and weaker susceptibility.

Excitonic and lattice contributions to the charge density wave in 1TTiSe2 revealed by a phonon bottleneck

H. Hedayat, C. J. Sayers, D. Bugini, C. Dallera, D. Wolverson, T. Batten, S. Karbassi, S. Friedemann, G. Cerullo, J. van Wezel, S. R. Clark, E. Carpene, and E. Da Como

Phys. Rev. Research 1, 023029 (2019) - Published 26 September, 2019

Time-resolved photoemission and optical experiments reveal a dynamical slowing down in the recovery of the charge density wave (CDW) in 1T-TiSe2 following perturbation by a femtosecond laser pulse. This behavior correlates with a switching of the dominant coherent phonon oscillations related to the crystal lattice. The work sheds light on the long standing question of exciton- and lattice-driven order in this complex system.

Dynamic acousto-optical control of confined polariton condensates: From single traps to coupled lattices

Alexander S. Kuznetsov, Klaus Biermann, and Paulo V. Santos

Phys. Rev. Research 1, 023030 (2019) - Published 26 September, 2019

This paper demonstrates the full dynamic control of on-site energies, the inter-site coupling, as well as the dispersion of lattices of polariton condensates using electrically excited acoustic waves. The spatially and time-dependent acoustic modulation is essentially independent of polariton density, thus making the acoustic modulation applicable to large lattices as well as to the single polariton limit.

Topological Floquet engineering of twisted bilayer graphene

Gabriel E. Topp, Gregor Jotzu, James W. McIver, Lede Xian, Angel Rubio, and Michael A. Sentef

Phys. Rev. Research 1, 023031 (2019) - Published 27 September, 2019

This study explores how twisted bilayers of graphene, arranged in Moiré patterns, can be used for Floquet engineering tunable topological properties. The authors show that the combination of a backgate voltage and circularly polarized laser pulses can be used to manipulate the Berry curvature of this material. The ultrafast changes of the resulting Hall currents can be detected by recently demonstrated sub-picosecond time-resolved transport experiments.

Practical figures of merit and thresholds for entanglement distribution in quantum networks

Sumeet Khatri, Corey T. Matyas, Aliza U. Siddiqui, and Jonathan P. Dowling

Phys. Rev. Research 1, 023032 (2019) - Published 27 September, 2019

This paper proposes two figures of merit to be used for the assessment of practical quantum communication networks: the average link connection time and the average largest entanglement cluster size. The authors show bounds on these, that represent limits on quantum communication networks under practical scenarios.

Stochastic buckling of self-assembled colloidal structures

Simon Stuij, Jan Maarten van Doorn, Thomas Kodger, Joris Sprakel, Corentin Coulais, and Peter Schall

Phys. Rev. Research 1, 023033 (2019) - Published 27 September, 2019

Using laser tweezers on self-assembled colloidal chains, the authors explore the buckling instability of filaments in the presence of thermal fluctuations and plasticity. They are able to identify a novel form of stochastic buckling instability, for which fluctuations become amplified and diverge in the vicinity of the critical buckling transition.

Relative Resolution: A multipole approximation at appropriate distances

Aviel Chaimovich, Kurt Kremer, and Christine Peter

Phys. Rev. Research 1, 023034 (2019) - Published 30 September, 2019

This paper reveals a multiscale framework for molecular simulations in which the resolution is relative to the observer: While near neighbors interact by a geometric multi-site potential, far neighbors interact by an isotropic single-site potential. This algorithm captures the behavior of various liquids, and it can be viewed as the natural variant of the “cell-multipole” approach for molecular systems.

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation