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### Dissipation engineered directional filter for quantum ratchets

Zlata Fedorova et al.
Phys. Rev. Research 3, 013260 (2021)

The authors investigate how transport rectification is possible in non-adiabatic Hamiltonian quantum ratchets by using a dissipative, dynamic impurity as a direction-dependent filter.

### Universal spectral form factor for many-body localization

Abhishodh Prakash, J. H. Pixley, and Manas Kulkarni
Phys. Rev. Research 3, L012019 (2021)

The authors study spectral correlations in the many-body-localized phase by computing the spectral form factor for which they obtain an expression and postulate the presence of a universal power-law scaling regime.

### Full-Bloch beams and ultrafast Rabi-rotating vortices

Lorenzo Dominici et al.
Phys. Rev. Research 3, 013007 (2021)

The authors report a field which simultaneously assumes all the quantum states of its Hilbert space, and show how this induces a topological defect that spans the physical space.

### Floquet dynamics in light-driven solids

M. Nuske et al.
Phys. Rev. Research 2, 043408 (2020)

This work discusses the transport properties of light-induced electronic Floquet states in solids. The authors provide an interpretation of the Hall conductivity in periodically driven graphene as a geometric-dissipative effect.

### Magnetic field-induced vortex triplet and vortex lattice in a liquid crystal cell

Enrique Calisto, Marcel G. Clerc, and Valeska Zambra
Phys. Rev. Research 2, 042026(R) (2020)

The authors show the emergence of a vortex triplet and a topological vortex lattice as a consequence of the combined effect of a magnetic ring and the uniform electric field onto a homeotropic nematic liquid crystal.

### Labyrinthine patterns transitions

S. Echeverría-Alar and M. G. Clerc
Phys. Rev. Research 2, 042036(R) (2020)

The authors show the short range-order of labyrinthine patterns as a single wavenumber behavior, classify different types of labyrinths, and reveal the bifurcations between them.

#### Deep reinforcement learning for feedback control in a collective flashing ratchet

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

Dong-Kyum Kim and Hawoong Jeong
Phys. Rev. Research 3, L022002 (2021)

#### Electric polarization as a nonquantized topological response and boundary Luttinger theorem

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

Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath, and Chong Wang
Phys. Rev. Research 3, 023011 (2021)

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

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

Michael L. Wall, Matthew R. Abernathy, and Gregory Quiroz
Phys. Rev. Research 3, 023010 (2021)

#### Single- to many-body crossover of a quantum carpet

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

Maciej Łebek, Piotr T. Grochowski, and Kazimierz Rzążewski
Phys. Rev. Research 3, 023009 (2021)

#### Effective point-charge analysis of crystal fields: Application to rare-earth pyrochlores and tripod kagome magnets $R{}_{3}\mathrm{Mg}{}_{2}\mathrm{Sb}{}_{3}\mathrm{O}{}_{14}$

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

Zhiling Dun et al.
Phys. Rev. Research 3, 023012 (2021)

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

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.

S. Ikegaya, W. B. Rui, D. Manske, and Andreas P. Schnyder
Phys. Rev. Research 3, 023007 (2021)

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

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.

Cheng Sheng et al.
Phys. Rev. Research 3, 023008 (2021)

#### Footprints of impurity quantum phase transitions in quantum Monte Carlo statistics

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.

Phys. Rev. Research 3, 023013 (2021)

#### Simulating noisy quantum circuits with matrix product density operators

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

Song Cheng et al.
Phys. Rev. Research 3, 023005 (2021)

#### Open system dynamics from thermodynamic compatibility

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

Roie Dann and Ronnie Kosloff
Phys. Rev. Research 3, 023006 (2021)

#### Universal Hall conductance scaling in non-Hermitian Chern insulators

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

Solofo Groenendijk, Thomas L. Schmidt, and Tobias Meng
Phys. Rev. Research 3, 023001 (2021)

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

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

E. Wiegand, B. Rousseaux, and G. Johansson
Phys. Rev. Research 3, 023003 (2021)

#### Antiresonance in switched systems with only unstable modes

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.

Maurizio Porfiri, Russell Jeter, and Igor Belykh
Phys. Rev. Research 3, L022001 (2021)

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

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.

Phys. Rev. Research 3, 023002 (2021)

#### Sensitive single-photon test of extended quantum theory with two-dimensional hexagonal boron nitride

The authors show the disappearance of higher-order interference using single-photons emitted from two-dimensional hexagonal boron nitride.

Tobias Vogl et al.
Phys. Rev. Research 3, 013296 (2021)

#### Hyperfine structure of the $2{}^{3}P$ state in ${}^{9}\mathrm{Be}$ and the nuclear quadrupole moment

The authors determine the deformation of the beryllium-9 nucleus in terms of the quadrupole moment using from the hyperfine splitting of the atomic triplet 2P state.

Mariusz Puchalski, Jacek Komasa, and Krzysztof Pachucki
Phys. Rev. Research 3, 013293 (2021)

#### Characterization of 1- and $2\text{−}\mu \mathrm{m}$-wavelength laser-produced microdroplet-tin plasma for generating extreme-ultraviolet light

The authors investigate the characteristics of EUV light emission from tin-microdroplet plasmas driven by 1 and 2 micron wavelength solid-state lasers.

R. Schupp et al.
Phys. Rev. Research 3, 013294 (2021)

#### Artificial electric field and electron hydrodynamics

The authors study how an artificial electric field generated by electron-electron interaction or electron-phonon interaction modifies electrons’ hydrodynamic properties in an inversion-breaking system.

Omid Tavakol and Yong Baek Kim
Phys. Rev. Research 3, 013290 (2021)

#### Steady-state Fano coherences in a V-type system driven by polarized incoherent light

The authors explore the properties of noise-induced Fano coherences generated in a three-level quantum V-system continuously pumped by polarized incoherent light in the absence of coherent driving.

Suyesh Koyu, Amro Dodin, Paul Brumer, and Timur V. Tscherbul
Phys. Rev. Research 3, 013295 (2021)

#### General approach to state-dependent optical-tweezer traps for polar molecules

This article describes a general approach to controlling the distance between a pair of trapped molecules down to about a hundred nanometers, by using bichromatic optical tweezer traps and the tensor Stark shift.

L. Caldwell and M. R. Tarbutt
Phys. Rev. Research 3, 013291 (2021)

#### Optimal noise estimation from syndrome statistics of quantum codes

The authors provide a method that estimates the noise on a quantum device from the information obtained during error correction.

Thomas Wagner, Hermann Kampermann, Dagmar Bruß, and Martin Kliesch
Phys. Rev. Research 3, 013292 (2021)

#### Transconductance quantization in a topological Josephson tunnel junction circuit

The authors show that Josephson tunnel junctions are universal quantum electrical circuit elements interrelating voltage, current, and resistance by fundamental constants.

L. Peyruchat, J. Griesmar, J.-D. Pillet, and Ç. Ö. Girit
Phys. Rev. Research 3, 013289 (2021)

#### Weyl Josephson circuits

The authors propose to simulate topological band structures with in-situ tunable Josephson tunnel junction quantum circuits.

Valla Fatemi, Anton R. Akhmerov, and Landry Bretheau
Phys. Rev. Research 3, 013288 (2021)

#### Local signatures of electron-electron scattering in an electronic cavity

The authors study electron-electron scattering in an electronic cavity on a local scale and observe conductance modulations behind a quantum point contact.

Carolin Gold et al.
Phys. Rev. Research 3, 013287 (2021)

#### Quantum simulation of Cayley-tree Ising Hamiltonians with three-dimensional Rydberg atoms

The authors report the quasiadiabatic ground-state preparation of an Ising-type Hamiltonian on Cayley-tree geometries of Rydberg atoms in three-dimensional arrangements of optical tweezers.

Yunheung Song et al.
Phys. Rev. Research 3, 013286 (2021)

#### Custom flow in molecular dynamics

The authors develop a method to numerically find the external force that generates the desired dynamics in a many-body inertial system.

Johannes Renner, Matthias Schmidt, and Daniel de las Heras
Phys. Rev. Research 3, 013281 (2021)

#### Klein scattering of spin-1 Dirac-Weyl wave and localized surface plasmon

This paper develops a theory for spin-1 Dirac-Weyl particles and unveils an analogy between localized surface plasmon and Klein tunneling resonances.

Hong-Ya Xu, Liang Huang, and Ying-Cheng Lai
Phys. Rev. Research 3, 013284 (2021)

#### Functional theory for Bose-Einstein condensates

The authors derive the universal one-matrix functional for Bose-Einstein condensates and show the existence of a Bose-Einstein force which identifies quantum depletion as a direct consequence of the geometry of density matrices.

Julia Liebert and Christian Schilling
Phys. Rev. Research 3, 013282 (2021)

#### Microphase separation in active filament systems maintained by cyclic dynamics of cluster size and order

The authors analyze the multiscale dynamics during the flocking transition in-silico and show that local particle clusters of different sizes and orders are important for the formation of polar order.

Lorenz Huber, Timo Krüger, and Erwin Frey
Phys. Rev. Research 3, 013280 (2021)

#### Eight Journals Introduce Letters

###### March 9, 2021

At the beginning of 2021, eight Physical Review journals began publishing Letters which are intended for the accelerated publication of important new results targeted to the specific readership of each journal.

#### Promoting Inclusive and Respectful Communications

###### November 18, 2020

APS Editor in Chief, Michael Thoennessen, discusses a new opportunity for communicating authors to include their pronouns together with their contact email in order to promote a more respectful, inclusive, and equitable environment.

#### Current Issue

Vol. 3, Iss. 2 — April - June 2021

#### Announcements

##### APS Announces Outstanding Referees for 2021
###### February 24, 2021

APS has selected 151 Outstanding Referees for 2021 who have demonstrated exceptional work in the assessment of manuscripts published in the Physical Review journals. A full list of the Outstanding Referees is available online.

##### Rapid Communications papers will now be Letters
###### November 23, 2020

Starting January 1, 2021, the Rapid Communications article type will be renamed to Letters. With this change, all eight Physical Review journals that had previously classified articles of the type “Rapid Communications” will adopt the practice of Physical Review Applied and now publish such articles as Letters. Learn more

More Announcements

#### Scope

Physical Review Research welcomes papers from the full spectrum of research topics of interest to the physics community. Research coverage in the journal comprises: fundamental and applied; theoretical and experimental, including technical and methodological advances; and interdisciplinary and newly emerging areas.

See the full scope