Volume 122, Issue 11

22 March 2019

Browse Issues:

On the Cover

A system (green) coupled to two detectors (orange). Each detector has a knob (gray circle) that can be used to change the strength of the measurement. The disturbance each measurement exerts on the system is symbolized by red splotches.

From the article:

Certifying Nonclassical Behavior for Negative Keldysh Quasiprobabilities
Patrick P. Potts
Phys. Rev. Lett. 122, 110401 (2019)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Matter-Wave Diffraction from a Quasicrystalline Optical Lattice

Konrad Viebahn, Matteo Sbroscia, Edward Carter, Jr-Chiun Yu, and Ulrich Schneider

Phys. Rev. Lett. 122, 110404 (2019) - Published 20 March, 2019

Experimentalists realize a Bose-Einstein condensate on a 2D quasicrystal optical lattice, opening the path for simulations of a variety of quantum many-body phenomena in these fractal structures.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Experimental Demonstration of Quantum Effects in the Operation of Microscopic Heat Engines

James Klatzow, Jonas N. Becker, Patrick M. Ledingham, Christian Weinzetl, Krzysztof T. Kaczmarek, Dylan J. Saunders, Joshua Nunn, Ian A. Walmsley, Raam Uzdin, and Eilon Poem

Phys. Rev. Lett. 122, 110601 (2019) - Published 20 March, 2019

Experiments demonstrate a quantum-coherence-induced power increase for quantum heat engines over their classical counterparts.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

On-Demand Semiconductor Source of Entangled Photons Which Simultaneously Has High Fidelity, Efficiency, and Indistinguishability

Hui Wang, Hai Hu, T.-H. Chung, Jian Qin, Xiaoxia Yang, J.-P. Li, R.-Z. Liu, H.-S. Zhong, Y.-M. He, Xing Ding, Y.-H. Deng, Qing Dai, Y.-H. Huo, Sven Höfling, Chao-Yang Lu, and Jian-Wei Pan

Phys. Rev. Lett. 122, 113602 (2019) - Published 22 March, 2019

A quantum-dot-based device combines all of the attributes necessary for producing a reliable source of entangled photons for quantum information applications.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Spectrum of Itinerant Fractional Excitations in Quantum Spin Ice

Masafumi Udagawa and Roderich Moessner

Phys. Rev. Lett. 122, 117201 (2019) - Published 18 March, 2019

Calculations uncover the neutron-scattering signature of the magnetic monopoles that propagate through quantum spin ices.

EDITORS' SUGGESTION

Genuine 12-Qubit Entanglement on a Superconducting Quantum Processor

Ming Gong, Ming-Cheng Chen, Yarui Zheng, Shiyu Wang, Chen Zha, Hui Deng, Zhiguang Yan, Hao Rong, Yulin Wu, Shaowei Li, Fusheng Chen, Youwei Zhao, Futian Liang, Jin Lin, Yu Xu, Cheng Guo, Lihua Sun, Juno Clark, Haohua Wang, Chengzhi Peng, Chao-Yang Lu, Xiaobo Zhu, and Jian-Wei Pan

Phys. Rev. Lett. 122, 110501 (2019) - Published 20 March, 2019

Twelve superconducting qubits are entangled, forming a linear cluster state, by using a carefully calibrated sequence of single and 2-qubit quantum gates.

EDITORS' SUGGESTION

Longitudinal Phase-Space Manipulation with Beam-Driven Plasma Wakefields

V. Shpakov et al.

Phys. Rev. Lett. 122, 114801 (2019) - Published 19 March, 2019

A new device removes the time-energy correlation or energy chirp on a plasma wakefield, reducing the overall energy spread of the beam.

EDITORS' SUGGESTION

Achievement of Reactor-Relevant Performance in Negative Triangularity Shape in the DIII-D Tokamak

M. E. Austin, A. Marinoni, M. L. Walker, M. W. Brookman, J. S. deGrassie, A. W. Hyatt, G. R. McKee, C. C. Petty, T. L. Rhodes, S. P. Smith, C. Sung, K. E. Thome, and A. D. Turnbull

Phys. Rev. Lett. 122, 115001 (2019) - Published 18 March, 2019

Tokamak experiments show that confining the plasma in an elongated inverse D-shape could reduce energy transport at reactor-relevant plasma pressure without disruptive instabilities.

EDITORS' SUGGESTION

Probing the Melting of a Two-Dimensional Quantum Wigner Crystal via its Screening Efficiency

H. Deng, L. N. Pfeiffer, K. W. West, K. W. Baldwin, L. W. Engel, and M. Shayegan

Phys. Rev. Lett. 122, 116601 (2019) - Published 21 March, 2019

Penetration capacitance measurements of screening efficiencies allows for the mapping of a precise temperature versus filling phase diagram for the melting of Wigner crystals.

LETTERS

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Certifying Nonclassical Behavior for Negative Keldysh Quasiprobabilities

Patrick P. Potts

Phys. Rev. Lett. 122, 110401 (2019) - Published 18 March, 2019

Ground-State Phase Diagram of a Spin-Orbital-Angular-Momentum Coupled Bose-Einstein Condensate

Dongfang Zhang, Tianyou Gao, Peng Zou, Lingran Kong, Ruizong Li, Xing Shen, Xiao-Long Chen, Shi-Guo Peng, Mingsheng Zhan, Han Pu, and Kaijun Jiang

Phys. Rev. Lett. 122, 110402 (2019) - Published 20 March, 2019

Avoiding Irreversibility: Engineering Resonant Conversions of Quantum Resources

Kamil Korzekwa, Christopher T. Chubb, and Marco Tomamichel

Phys. Rev. Lett. 122, 110403 (2019) - Published 22 March, 2019

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Matter-Wave Diffraction from a Quasicrystalline Optical Lattice

Konrad Viebahn, Matteo Sbroscia, Edward Carter, Jr-Chiun Yu, and Ulrich Schneider

Phys. Rev. Lett. 122, 110404 (2019) - Published 20 March, 2019

Experimentalists realize a Bose-Einstein condensate on a 2D quasicrystal optical lattice, opening the path for simulations of a variety of quantum many-body phenomena in these fractal structures.

Quantum Critical Regime in a Quadratically Driven Nonlinear Photonic Lattice

Riccardo Rota, Fabrizio Minganti, Cristiano Ciuti, and Vincenzo Savona

Phys. Rev. Lett. 122, 110405 (2019) - Published 21 March, 2019

Pulsed Quantum-State Reconstruction of Dark Systems

Yu Liu, Jiazhao Tian, Ralf Betzholz, and Jianming Cai

Phys. Rev. Lett. 122, 110406 (2019) - Published 21 March, 2019

EDITORS' SUGGESTION

Genuine 12-Qubit Entanglement on a Superconducting Quantum Processor

Phys. Rev. Lett. 122, 110501 (2019) - Published 20 March, 2019

Twelve superconducting qubits are entangled, forming a linear cluster state, by using a carefully calibrated sequence of single and 2-qubit quantum gates.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Experimental Demonstration of Quantum Effects in the Operation of Microscopic Heat Engines

James Klatzow, Jonas N. Becker, Patrick M. Ledingham, Christian Weinzetl, Krzysztof T. Kaczmarek, Dylan J. Saunders, Joshua Nunn, Ian A. Walmsley, Raam Uzdin, and Eilon Poem

Phys. Rev. Lett. 122, 110601 (2019) - Published 20 March, 2019

Experiments demonstrate a quantum-coherence-induced power increase for quantum heat engines over their classical counterparts.

Absence of Criticality in the Phase Transitions of Open Floquet Systems

Steven Mathey and Sebastian Diehl

Phys. Rev. Lett. 122, 110602 (2019) - Published 22 March, 2019

Gravitation and Astrophysics

Anisotropies in the Astrophysical Gravitational-Wave Background: The Impact of Black Hole Distributions

Alexander C. Jenkins, Richard O‘Shaughnessy, Mairi Sakellariadou, and Daniel Wysocki

Phys. Rev. Lett. 122, 111101 (2019) - Published 22 March, 2019

Elementary Particles and Fields

Holographic Entanglement of Purification from Conformal Field Theories

Pawel Caputa, Masamichi Miyaji, Tadashi Takayanagi, and Koji Umemoto

Phys. Rev. Lett. 122, 111601 (2019) - Published 21 March, 2019

Weyl Invariance of String Theories in Generalized Supergravity Backgrounds

José J. Fernández-Melgarejo, Jun-ichi Sakamoto, Yuho Sakatani, and Kentaroh Yoshida

Phys. Rev. Lett. 122, 111602 (2019) - Published 21 March, 2019

Causality and Loop-Tree Duality at Higher Loops

Robert Runkel, Zoltán Szőr, Juan Pablo Vesga, and Stefan Weinzierl

Phys. Rev. Lett. 122, 111603 (2019) - Published 22 March, 2019

All Tree Amplitudes of 6D (2,0) Supergravity: Interacting Tensor Multiplets and the K3 Moduli Space

Matthew Heydeman, John H. Schwarz, Congkao Wen, and Shun-Qing Zhang

Phys. Rev. Lett. 122, 111604 (2019) - Published 22 March, 2019

Early Cosmological Period of QCD Confinement

Seyda Ipek and Tim M. P. Tait

Phys. Rev. Lett. 122, 112001 (2019) - Published 19 March, 2019

Atomic, Molecular, and Optical Physics

Optical Transmission of an Atomic Vapor in the Mesoscopic Regime

T. Peyrot, Y. R. P. Sortais, J.-J. Greffet, A. Browaeys, A. Sargsyan, J. Keaveney, I. G. Hughes, and C. S. Adams

Phys. Rev. Lett. 122, 113401 (2019) - Published 20 March, 2019

Ramsey Spectroscopy with Displaced Frequency Jumps

M. Shuker, J. W. Pollock, R. Boudot, V. I. Yudin, A. V. Taichenachev, J. Kitching, and E. A. Donley

Phys. Rev. Lett. 122, 113601 (2019) - Published 19 March, 2019

FEATURED IN PHYSICS

EDITORS' SUGGESTION

On-Demand Semiconductor Source of Entangled Photons Which Simultaneously Has High Fidelity, Efficiency, and Indistinguishability

Hui Wang, Hai Hu, T.-H. Chung, Jian Qin, Xiaoxia Yang, J.-P. Li, R.-Z. Liu, H.-S. Zhong, Y.-M. He, Xing Ding, Y.-H. Deng, Qing Dai, Y.-H. Huo, Sven Höfling, Chao-Yang Lu, and Jian-Wei Pan

Phys. Rev. Lett. 122, 113602 (2019) - Published 22 March, 2019

A quantum-dot-based device combines all of the attributes necessary for producing a reliable source of entangled photons for quantum information applications.

Cavity-Quantum-Electrodynamical Toolbox for Quantum Magnetism

Farokh Mivehvar, Helmut Ritsch, and Francesco Piazza

Phys. Rev. Lett. 122, 113603 (2019) - Published 22 March, 2019

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Compound Metaoptics for Amplitude and Phase Control of Wave Fronts

Brian O. Raeker and Anthony Grbic

Phys. Rev. Lett. 122, 113901 (2019) - Published 22 March, 2019

Twist-Induced Snapping in a Bent Elastic Rod and Ribbon

Tomohiko G. Sano and Hirofumi Wada

Phys. Rev. Lett. 122, 114301 (2019) - Published 22 March, 2019

Gravitational Effect in Evaporating Binary Microdroplets

Yaxing Li, Christian Diddens, Pengyu Lv, Herman Wijshoff, Michel Versluis, and Detlef Lohse

Phys. Rev. Lett. 122, 114501 (2019) - Published 18 March, 2019

Transition to Turbulence in Particle Laden Flows

Nishchal Agrawal, George H. Choueiri, and Björn Hof

Phys. Rev. Lett. 122, 114502 (2019) - Published 20 March, 2019

Plasma and Beam Physics

EDITORS' SUGGESTION

Longitudinal Phase-Space Manipulation with Beam-Driven Plasma Wakefields

V. Shpakov et al.

Phys. Rev. Lett. 122, 114801 (2019) - Published 19 March, 2019

A new device removes the time-energy correlation or energy chirp on a plasma wakefield, reducing the overall energy spread of the beam.

EDITORS' SUGGESTION

Achievement of Reactor-Relevant Performance in Negative Triangularity Shape in the DIII-D Tokamak

M. E. Austin, A. Marinoni, M. L. Walker, M. W. Brookman, J. S. deGrassie, A. W. Hyatt, G. R. McKee, C. C. Petty, T. L. Rhodes, S. P. Smith, C. Sung, K. E. Thome, and A. D. Turnbull

Phys. Rev. Lett. 122, 115001 (2019) - Published 18 March, 2019

Tokamak experiments show that confining the plasma in an elongated inverse D-shape could reduce energy transport at reactor-relevant plasma pressure without disruptive instabilities.

Condensed Matter: Structure, etc.

Atomic-Level Viscosity Distribution in the Hydration Layer

Kenichi Umeda, Kei Kobayashi, Taketoshi Minato, and Hirofumi Yamada

Phys. Rev. Lett. 122, 116001 (2019) - Published 21 March, 2019

Contrasting the Surface Phonon Dispersion of ${Pb}_{0.7} {Sn}_{0.3} Se$ in Its Topologically Trivial and Nontrivial Phases

S. Kalish, C. Chamon, M. El-Batanouny, L. H. Santos, R. Sankar, and F. C. Chou

Phys. Rev. Lett. 122, 116101 (2019) - Published 21 March, 2019

Condensed Matter: Electronic Properties, etc.

Electrically Switchable and Tunable Rashba-Type Spin Splitting in Covalent Perovskite Oxides

Julien Varignon, Jacobo Santamaria, and Manuel Bibes

Phys. Rev. Lett. 122, 116401 (2019) - Published 22 March, 2019

Orbital Fingerprint of Topological Fermi Arcs in the Weyl Semimetal TaP

Chul-Hee Min, Hendrik Bentmann, Jennifer N. Neu, Philipp Eck, Simon Moser, Tim Figgemeier, Maximilian Ünzelmann, Katharina Kissner, Peter Lutz, Roland J. Koch, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Ronny Thomale, Giorgio Sangiovanni, Theo Siegrist, Domenico Di Sante, and Friedrich Reinert

Phys. Rev. Lett. 122, 116402 (2019) - Published 22 March, 2019

EDITORS' SUGGESTION

Probing the Melting of a Two-Dimensional Quantum Wigner Crystal via its Screening Efficiency

H. Deng, L. N. Pfeiffer, K. W. West, K. W. Baldwin, L. W. Engel, and M. Shayegan

Phys. Rev. Lett. 122, 116601 (2019) - Published 21 March, 2019

Penetration capacitance measurements of screening efficiencies allows for the mapping of a precise temperature versus filling phase diagram for the melting of Wigner crystals.

Proposal for Measuring the Parity Anomaly in a Topological Superconductor Ring

Chun-Xiao Liu, William S. Cole, and Jay D. Sau

Phys. Rev. Lett. 122, 117001 (2019) - Published 22 March, 2019

Theory of Magnetic Domain Phases in Ferromagnetic Superconductors

Zh. Devizorova, S. Mironov, and A. Buzdin

Phys. Rev. Lett. 122, 117002 (2019) - Published 22 March, 2019

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Spectrum of Itinerant Fractional Excitations in Quantum Spin Ice

Masafumi Udagawa and Roderich Moessner

Phys. Rev. Lett. 122, 117201 (2019) - Published 18 March, 2019

Calculations uncover the neutron-scattering signature of the magnetic monopoles that propagate through quantum spin ices.

Coherent Excitation of Heterosymmetric Spin Waves with Ultrashort Wavelengths

G. Dieterle, J. Förster, H. Stoll, A. S. Semisalova, S. Finizio, A. Gangwar, M. Weigand, M. Noske, M. Fähnle, I. Bykova, J. Gräfe, D. A. Bozhko, H. Yu. Musiienko-Shmarova, V. Tiberkevich, A. N. Slavin, C. H. Back, J. Raabe, G. Schütz, and S. Wintz

Phys. Rev. Lett. 122, 117202 (2019) - Published 21 March, 2019

Giant Anisotropy of Gilbert Damping in Epitaxial CoFe Films

Yi Li, Fanlong Zeng, Steven S.-L. Zhang, Hyeondeok Shin, Hilal Saglam, Vedat Karakas, Ozhan Ozatay, John E. Pearson, Olle G. Heinonen, Yizheng Wu, Axel Hoffmann, and Wei Zhang

Phys. Rev. Lett. 122, 117203 (2019) - Published 21 March, 2019

Coexistence of Ferromagnetic and Stripe Antiferromagnetic Spin Fluctuations in ${SrCo}_{2} {As}_{2}$

Yu Li, Zhiping Yin, Zhonghao Liu, Weiyi Wang, Zhuang Xu, Yu Song, Long Tian, Yaobo Huang, Dawei Shen, D. L. Abernathy, J. L. Niedziela, R. A. Ewings, T. G. Perring, Daniel M. Pajerowski, Masaaki Matsuda, Philippe Bourges, Enderle Mechthild, Yixi Su, and Pengcheng Dai

Phys. Rev. Lett. 122, 117204 (2019) - Published 21 March, 2019

Barkhausen Noise from Precessional Domain Wall Motion

Touko Herranen and Lasse Laurson

Phys. Rev. Lett. 122, 117205 (2019) - Published 21 March, 2019

Probing the Band Structure of Topological Silicon Photonic Lattices in the Visible Spectrum

Siying Peng (彭斯颖), Nick J. Schilder, Xiang Ni, Jorik van de Groep, Mark L. Brongersma, Andrea Alù, Alexander B. Khanikaev, Harry A. Atwater, and Albert Polman

Phys. Rev. Lett. 122, 117401 (2019) - Published 21 March, 2019

Defect Proliferation at the Quasicondensate Crossover of Two-Dimensional Dipolar Excitons Trapped in Coupled GaAs Quantum Wells

Suzanne Dang, Romain Anankine, Carmen Gomez, Aristide Lemaître, Markus Holzmann, and François Dubin

Phys. Rev. Lett. 122, 117402 (2019) - Published 22 March, 2019

Realizing Magnetoelectric Coupling with Hydrogen Intercalation

J. Y. Ni, P. S. Wang, J. L. Lu, and H. J. Xiang

Phys. Rev. Lett. 122, 117601 (2019) - Published 20 March, 2019

Polymer, Soft Matter, Biological, Climate, and Interdisciplinary Physics

Topological Protection Can Arise from Thermal Fluctuations and Interactions

Ricardo Pablo Pedro, Jayson Paulose, Anton Souslov, Mildred Dresselhaus, and Vincenzo Vitelli

Phys. Rev. Lett. 122, 118001 (2019) - Published 21 March, 2019

Cell Size Regulation Induces Sustained Oscillations in the Population Growth Rate

Farshid Jafarpour

Phys. Rev. Lett. 122, 118101 (2019) - Published 21 March, 2019