Volume 123, Issue 8

23 August 2019

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On the Cover

Microscopic image of a single droplet cluster at the interface between a nematic liquid crystal and air.

From the article:

Controlled Multistep Self-Assembling of Colloidal Droplets at a Nematic Liquid Crystal–Air Interface
Nan Wang, Julian S. Evans, Chenxi Li, Victor M. Pergamenshchik, Ivan I. Smalyukh, and Sailing He
Phys. Rev. Lett. 123, 087801 (2019)

HIGHLIGHTED ARTICLES

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Quantum Interference between Light Sources Separated by 150 Million Kilometers

Yu-Hao Deng, Hui Wang, Xing Ding, Z.-C. Duan, Jian Qin, M.-C. Chen, Yu He, Yu-Ming He, Jin-Peng Li, Yu-Huai Li, Li-Chao Peng, E. S. Matekole, Tim Byrnes, C. Schneider, M. Kamp, Da-Wei Wang, Jonathan P. Dowling, Sven Höfling, Chao-Yang Lu, Marlan O. Scully, and Jian-Wei Pan

Phys. Rev. Lett. 123, 080401 (2019) - Published 21 August, 2019

Researchers witness quantum interference and entanglement between photons from sources 150 million km apart—the Sun and a quantum dot in their lab.

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Observation of Topological Magnon Insulator States in a Superconducting Circuit

W. Cai, J. Han, Feng Mei, Y. Xu, Y. Ma, X. Li, H. Wang, Y. P. Song, Zheng-Yuan Xue, Zhang-qi Yin, Suotang Jia, and Luyan Sun

Phys. Rev. Lett. 123, 080501 (2019) - Published 20 August, 2019

A chain of superconducting qubits reproduces two key features of topological insulators.

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Spin Heat Engine Coupled to a Harmonic-Oscillator Flywheel

D. von Lindenfels, O. Gräb, C. T. Schmiegelow, V. Kaushal, J. Schulz, Mark T. Mitchison, John Goold, F. Schmidt-Kaler, and U. G. Poschinger

Phys. Rev. Lett. 123, 080602 (2019) - Published 22 August, 2019

By converting electron spin into ion motion, researchers build a simple heat engine out of a single calcium ion.

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Nonuniversal Transverse Electron Mean Free Path through Few-layer Graphene

D. Geelen, J. Jobst, E. E. Krasovskii, S. J. van der Molen, and R. M. Tromp

Phys. Rev. Lett. 123, 086802 (2019) - Published 19 August, 2019

A law describing electron attenuation in solids has long helped researchers determine the size of nanoscale objects, but experiments show that it is less general than previously thought.

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Periodicity-Doubling Cascades: Direct Observation in Ferroelastic Materials

Arnoud S. Everhardt, Silvia Damerio, Jacob A. Zorn, Silang Zhou, Neus Domingo, Gustau Catalan, Ekhard K. H. Salje, Long-Qing Chen, and Beatriz Noheda

Phys. Rev. Lett. 123, 087603 (2019) - Published 22 August, 2019

Period doubling—a behavior seen in systems that are nearing a chaotic regime—shows up in the microstructure of a strain-textured material.

EDITORS' SUGGESTION

Direct Observation of Proton Emission in ${}^{11}{Be}$

Y. Ayyad et al.

Phys. Rev. Lett. 123, 082501 (2019) - Published 22 August, 2019

The elusive beta-delayed proton emission of the neutron-rich halo nucleus $^{11}$ Be has been observed for the first time.

EDITORS' SUGGESTION

Image-Charge Detection of the Rydberg States of Surface Electrons on Liquid Helium

Erika Kawakami, Asem Elarabi, and Denis Konstantinov

Phys. Rev. Lett. 123, 086801 (2019) - Published 19 August, 2019

A spectroscopic method to detect the transitions between the Rydberg states of surface electrons on liquid helium with potential applications in quantum computing is demonstrated.

LETTERS

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

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Quantum Interference between Light Sources Separated by 150 Million Kilometers

Phys. Rev. Lett. 123, 080401 (2019) - Published 21 August, 2019

Researchers witness quantum interference and entanglement between photons from sources 150 million km apart—the Sun and a quantum dot in their lab.

Neutron Star Heating Constraints on Wave-Function Collapse Models

Antoine Tilloy and Thomas M. Stace

Phys. Rev. Lett. 123, 080402 (2019) - Published 21 August, 2019

Few Versus Many-Body Physics of an Impurity Immersed in a Superfluid of Spin $1 / 2$ Attractive Fermions

M. Pierce, X. Leyronas, and F. Chevy

Phys. Rev. Lett. 123, 080403 (2019) - Published 23 August, 2019

Simulating Broken $PT$ -Symmetric Hamiltonian Systems by Weak Measurement

Minyi Huang, Ray-Kuang Lee, Lijian Zhang, Shao-Ming Fei, and Junde Wu

Phys. Rev. Lett. 123, 080404 (2019) - Published 23 August, 2019

FEATURED IN PHYSICS

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Observation of Topological Magnon Insulator States in a Superconducting Circuit

W. Cai, J. Han, Feng Mei, Y. Xu, Y. Ma, X. Li, H. Wang, Y. P. Song, Zheng-Yuan Xue, Zhang-qi Yin, Suotang Jia, and Luyan Sun

Phys. Rev. Lett. 123, 080501 (2019) - Published 20 August, 2019

A chain of superconducting qubits reproduces two key features of topological insulators.

Quantum Storage of Frequency-Multiplexed Heralded Single Photons

Alessandro Seri, Dario Lago-Rivera, Andreas Lenhard, Giacomo Corrielli, Roberto Osellame, Margherita Mazzera, and Hugues de Riedmatten

Phys. Rev. Lett. 123, 080502 (2019) - Published 22 August, 2019

All Pure Fermionic Non-Gaussian States Are Magic States for Matchgate Computations

M. Hebenstreit, R. Jozsa, B. Kraus, S. Strelchuk, and M. Yoganathan

Phys. Rev. Lett. 123, 080503 (2019) - Published 23 August, 2019

Quantum Network Transfer and Storage with Compact Localized States Induced by Local Symmetries

M. Röntgen, C. V. Morfonios, I. Brouzos, F. K. Diakonos, and P. Schmelcher

Phys. Rev. Lett. 123, 080504 (2019) - Published 23 August, 2019

Open Quantum Symmetric Simple Exclusion Process

Denis Bernard and Tony Jin

Phys. Rev. Lett. 123, 080601 (2019) - Published 21 August, 2019

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Spin Heat Engine Coupled to a Harmonic-Oscillator Flywheel

D. von Lindenfels, O. Gräb, C. T. Schmiegelow, V. Kaushal, J. Schulz, Mark T. Mitchison, John Goold, F. Schmidt-Kaler, and U. G. Poschinger

Phys. Rev. Lett. 123, 080602 (2019) - Published 22 August, 2019

By converting electron spin into ion motion, researchers build a simple heat engine out of a single calcium ion.

Maxwell’s Demons with Finite Size and Response Time

Nathaniel Rupprecht and Dervis Can Vural

Phys. Rev. Lett. 123, 080603 (2019) - Published 22 August, 2019

Gravitation and Astrophysics

Upper Bound of Neutrino Masses from Combined Cosmological Observations and Particle Physics Experiments

Arthur Loureiro, Andrei Cuceu, Filipe B. Abdalla, Bruno Moraes, Lorne Whiteway, Michael McLeod, Sreekumar T. Balan, Ofer Lahav, Aurélien Benoit-Lévy, Marc Manera, Richard P. Rollins, and Henrique S. Xavier

Phys. Rev. Lett. 123, 081301 (2019) - Published 22 August, 2019

Euclidean Axion Wormholes Have Multiple Negative Modes

Thomas Hertog, Brecht Truijen, and Thomas Van Riet

Phys. Rev. Lett. 123, 081302 (2019) - Published 23 August, 2019

Elementary Particles and Fields

First Law of Holographic Complexity

Alice Bernamonti, Federico Galli, Juan Hernandez, Robert C. Myers, Shan-Ming Ruan, and Joan Simón

Phys. Rev. Lett. 123, 081601 (2019) - Published 22 August, 2019

Derivation of the Holographic Dual of a Planar Conformal Field Theory in 4D

Nikolay Gromov and Amit Sever

Phys. Rev. Lett. 123, 081602 (2019) - Published 23 August, 2019

Sub-GeV Atmospheric Neutrinos and $C P$ Violation in DUNE

Kevin J. Kelly, Pedro A. N. Machado, Ivan Martinez-Soler, Stephen J. Parke, and Yuber F. Perez-Gonzalez

Phys. Rev. Lett. 123, 081801 (2019) - Published 23 August, 2019

Measurement of $C P$ -Violating and Mixing-Induced Observables in $B_{s}^{0} \to ϕ γ$ Decays

R. Aaij et al. (LHCb Collaboration)

Phys. Rev. Lett. 123, 081802 (2019) - Published 23 August, 2019

Higher Order Corrections to Spin Correlations in Top Quark Pair Production at the LHC

Arnd Behring, Michał Czakon, Alexander Mitov, Rene Poncelet, and Andrew S. Papanastasiou

Phys. Rev. Lett. 123, 082001 (2019) - Published 21 August, 2019

Nuclear Physics

EDITORS' SUGGESTION

Direct Observation of Proton Emission in ${}^{11}{Be}$

Y. Ayyad et al.

Phys. Rev. Lett. 123, 082501 (2019) - Published 22 August, 2019

The elusive beta-delayed proton emission of the neutron-rich halo nucleus $^{11}$ Be has been observed for the first time.

Atomic, Molecular, and Optical Physics

Exact Potential Energy Surface for Molecules in Cavities

Lionel Lacombe, Norah M. Hoffmann, and Neepa T. Maitra

Phys. Rev. Lett. 123, 083201 (2019) - Published 22 August, 2019

Microscopic and Macroscopic Signatures of 3D Anderson Localization of Light

Florent Cottier, Ana Cipris, Romain Bachelard, and Robin Kaiser

Phys. Rev. Lett. 123, 083401 (2019) - Published 23 August, 2019

$T^{3}$ Stern-Gerlach Matter-Wave Interferometer

O. Amit, Y. Margalit, O. Dobkowski, Z. Zhou, Y. Japha, M. Zimmermann, M. A. Efremov, F. A. Narducci, E. M. Rasel, W. P. Schleich, and R. Folman

Phys. Rev. Lett. 123, 083601 (2019) - Published 21 August, 2019

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Persistent Coherent Beating in Coupled Parametric Oscillators

Leon Bello, Marcello Calvanese Strinati, Emanuele G. Dalla Torre, and Avi Pe’er

Phys. Rev. Lett. 123, 083901 (2019) - Published 22 August, 2019

Condensed Matter: Electronic Properties, etc.

Correlation-Driven Charge Order in a Frustrated Two-Dimensional Atom Lattice

F. Adler, S. Rachel, M. Laubach, J. Maklar, A. Fleszar, J. Schäfer, and R. Claessen

Phys. Rev. Lett. 123, 086401 (2019) - Published 21 August, 2019

Large Magnon Contributions to Thermal Conductance in Quasi-One-Dimensional Fe-Based Ladder Compounds ${BaFe}_{2} (S_{1 - x} {Se}_{x})_{3}$

Fei Du, Yutaka Ueda, and Kenya Ohgushi

Phys. Rev. Lett. 123, 086601 (2019) - Published 21 August, 2019

Logarithmic Spreading of Out-of-Time-Ordered Correlators without Many-Body Localization

Adam Smith, Johannes Knolle, Roderich Moessner, and Dmitry L. Kovrizhin

Phys. Rev. Lett. 123, 086602 (2019) - Published 23 August, 2019

EDITORS' SUGGESTION

Image-Charge Detection of the Rydberg States of Surface Electrons on Liquid Helium

Erika Kawakami, Asem Elarabi, and Denis Konstantinov

Phys. Rev. Lett. 123, 086801 (2019) - Published 19 August, 2019

A spectroscopic method to detect the transitions between the Rydberg states of surface electrons on liquid helium with potential applications in quantum computing is demonstrated.

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Nonuniversal Transverse Electron Mean Free Path through Few-layer Graphene

D. Geelen, J. Jobst, E. E. Krasovskii, S. J. van der Molen, and R. M. Tromp

Phys. Rev. Lett. 123, 086802 (2019) - Published 19 August, 2019

A law describing electron attenuation in solids has long helped researchers determine the size of nanoscale objects, but experiments show that it is less general than previously thought.