Latest Research


Letter 
Thermodynamic evidence for a twocomponent superconducting order parameter in Sr_{2}RuO_{4}
Ultrasound measurements show that the superconducting order parameter in strontium ruthenate must have two components.
 Sayak Ghosh
 , Arkady Shekhter
 , F. Jerzembeck
 , N. Kikugawa
 , Dmitry A. Sokolov
 , Manuel Brando
 , A. P. Mackenzie
 , Clifford W. Hicks
 & B. J. Ramshaw

Article 
Entanglement between distant macroscopic mechanical and spin systems
Einstein–Podolsky–Rosen entanglement between a millimetresize mechanical membrane oscillator and a collective atomic spin oscillator formed by an ensemble of caesium atoms is achieved, although the two systems are spatially separated by one metre.
 Rodrigo A. Thomas
 , Michał Parniak
 , Christoffer Østfeldt
 , Christoffer B. Møller
 , Christian Bærentsen
 , Yeghishe Tsaturyan
 , Albert Schliesser
 , Jürgen Appel
 , Emil Zeuthen
 & Eugene S. Polzik

Article 
Machine learning the thermodynamic arrow of time
The phrase ‘arrow of time’ refers to the asymmetry in the flow of events. A machine learning algorithm trained to infer its direction identifies entropy production as the relevant underlying physical principle in the decisionmaking process.
 Alireza Seif
 , Mohammad Hafezi
 & Christopher Jarzynski

Article 
Observation of energyresolved manybody localization
Manybody localization—a phenomenon where an isolated system fails to reach thermal equilibrium—has been studied with a programmable quantum processor, which reveals the crucial role played by the initial energy on the onset of localization.
 Qiujiang Guo
 , Chen Cheng
 , ZhengHang Sun
 , Zixuan Song
 , Hekang Li
 , Zhen Wang
 , Wenhui Ren
 , Hang Dong
 , Dongning Zheng
 , YuRan Zhang
 , Rubem Mondaini
 , Heng Fan
 & H. Wang

Article 
Morphology selection kinetics of crystallization in a sphere
The authors investigate the role of spherical confinement and curvatureinduced topological defects on the crystallization of charged colloids. They conclude that crystallization in spherical confinement is due to a combination of thermodynamics and kinetic pathways.
 Yanshuang Chen
 , Zhenwei Yao
 , Shixiang Tang
 , Hua Tong
 , Taiki Yanagishima
 , Hajime Tanaka
 & Peng Tan

Article 
Time–information uncertainty relations in thermodynamics
A time–information uncertainty relation in thermodynamics has been derived, analogous to the time–energy uncertainty relation in quantum mechanics, imposing limits on the speed of energy and entropy exchange between a system and external reservoirs.
 Schuyler B. Nicholson
 , Luis Pedro GarcíaPintos
 , Adolfo del Campo
 & Jason R. Green

Article 
Generalized superradiance for producing broadband coherent radiation with transversely modulated arbitrarily diluted bunches
A new form of superradiance is predicted that ‘in contrast to the standard effect’ arises even for vanishing numbers of particles per wavelength. This finding may enable coherent emission in plasma accelerators.
 J. Vieira
 , M. Pardal
 , J. T. Mendonça
 & R. A. Fonseca

Article 
Weaktostrong transition of quantum measurement in a trappedion system
A weaktostrong quantum measurement transition has been observed in a singletrappedion system, where the ion’s internal electronic state and its vibrational motion play the roles of the measured system and the measuring pointer.
 Yiming Pan
 , Jie Zhang
 , Eliahu Cohen
 , Chunwang Wu
 , PingXing Chen
 & Nir Davidson

Letter 
Symmetry breaking in twisted double bilayer graphene
Transport measurements show that spontaneous symmetry breaking plays a crucial role in the correlated insulating and metallic states in twisted double bilayer graphene.
 Minhao He
 , Yuhao Li
 , Jiaqi Cai
 , Yang Liu
 , K. Watanabe
 , T. Taniguchi
 , Xiaodong Xu
 & Matthew Yankowitz

Letter 
Chemotaxis under flow disorder shapes microbial dispersion in porous media
Bacteria live in heterogeneous environments, so it is important to investigate their behaviour in porous media. Here the authors show that flow disorder enhances the effect of chemical gradients in micropockets in a porous medium, which then aid the transport of bacteria.
 Pietro de Anna
 , Amir A. Pahlavan
 , Yutaka Yawata
 , Roman Stocker
 & Ruben Juanes

Article 
Underground test of gravityrelated wave function collapse
The radiation emission rate from gravityrelated wave function collapse is calculated and the results of a dedicated experiment at the Gran Sasso laboratory are reported, ruling out the natural parameterfree version of the Diósi–Penrose model.
 Sandro Donadi
 , Kristian Piscicchia
 , Catalina Curceanu
 , Lajos Diósi
 , Matthias Laubenstein
 & Angelo Bassi

Letter 
Black metal hydrogen above 360 GPa driven by proton quantum fluctuations
Numerical calculations that include the quantum fluctuations of protons explain the optical properties of hydrogen at high pressure.
 Lorenzo Monacelli
 , Ion Errea
 , Matteo Calandra
 & Francesco Mauri

Article 
Structure determines where crystallization occurs in a soft colloidal glass
Softness, a machinelearned structural quantity, has been recently identified as a parameter that characterizes glassy dynamics. Here, the authors observe devitrification in 3D soft colloidal glasses and find that softness may indicate regions predisposed to crystallization.
 Divya Ganapathi
 , Dibyashree Chakrabarti
 , A. K. Sood
 & Rajesh Ganapathy

Letter 
Zerobias peaks at zero magnetic field in ferromagnetic hybrid nanowires
By incorporating a ferromagnetic layer in their superconductor–semiconductor nanowire hybrid device, Vaitiekėnas et al. show that zerobias peaks—potential Majorana bound states—can be induced without an external magnetic field.
 S. Vaitiekėnas
 , Y. Liu
 , P. Krogstrup
 & C. M. Marcus

Article 
Direct observation of anyonic braiding statistics
An interferometer device is used to detect the quantummechanical phase that is gained when two anyons are braided around each other. The fractional value of the phase proves that these quasiparticles are neither bosons nor fermions.
 J. Nakamura
 , S. Liang
 , G. C. Gardner
 & M. J. Manfra

Article 
Braiding photonic topological zero modes
The nonzero geometric phase acquired by the braiding of vortex modes in photonic waveguide lattices demonstrates their potential to serve as a platform for the study of both Abelian and nonAbelian braiding in bosonic systems.
 Jiho Noh
 , Thomas Schuster
 , Thomas Iadecola
 , Sheng Huang
 , Mohan Wang
 , Kevin P. Chen
 , Claudio Chamon
 & Mikael C. Rechtsman

Article 
Thermodynamics of a deeply degenerate SU(N)symmetric Fermi gas
Ultracold alkalineearth fermionic atoms with large number of nuclear spin states possess SU(N) symmetry. That deeply affects their interaction properties, and allows a Fermi gas of these atoms to be cooled quickly to the quantum degenerate regime.
 Lindsay Sonderhouse
 , Christian Sanner
 , Ross B. Hutson
 , Akihisa Goban
 , Thomas Bilitewski
 , Lingfeng Yan
 , William R. Milner
 , Ana M. Rey
 & Jun Ye

Letter 
Spectroscopic fingerprint of charge order melting driven by quantum fluctuations in a cuprate
Xray scattering experiments show that the quantum fluctuations associated with charge order take a form that is incompatible with the idea of competition between charge order and superconductivity.
 W. S. Lee
 , KeJin J. Zhou
 , M. Hepting
 , J. Li
 , A. Nag
 , A. C. Walters
 , M. GarciaFernandez
 , H. C. Robarts
 , M. Hashimoto
 , H. Lu
 , B. Nosarzewski
 , D. Song
 , H. Eisaki
 , Z. X. Shen
 , B. Moritz
 , J. Zaanen
 & T. P. Devereaux

Article 
Binary icosahedral clusters of hard spheres in spherical confinement
The authors investigate outofequilibrium crystallization of a binary mixture of spherelike nanoparticles in small droplets. They observe the spontaneous formation of an icosahedral structure with stable MgCu_{2} phases, which are promising for photonic applications.
 Da Wang
 , Tonnishtha Dasgupta
 , Ernest B. van der Wee
 , Daniele Zanaga
 , Thomas Altantzis
 , Yaoting Wu
 , Gabriele M. Coli
 , Christopher B. Murray
 , Sara Bals
 , Marjolein Dijkstra
 & Alfons van Blaaderen

Article 
Controlling the speed and trajectory of evolution with counterdiabatic driving
The unpredictability of evolution makes it difficult to deal with drug resistance because over the course of a treatment there may be mutations that we cannot predict. The authors propose to use quantum methods to control the speed and distribution of potential evolutionary outcomes.
 Shamreen Iram
 , Emily Dolson
 , Joshua Chiel
 , Julia Pelesko
 , Nikhil Krishnan
 , Özenç Güngör
 , Benjamin KuznetsSpeck
 , Sebastian Deffner
 , Efe Ilker
 , Jacob G. Scott
 & Michael Hinczewski

Article 
Cooperative pattern formation in multicomponent bacterial systems through reciprocal motility regulation
The authors engineer Escherichia coli into two distinct strains with tunable motility. The induced control of motility leads to the formation of patterns through a selforganizing mechanism that is specific to multicomponent active systems.
 A. I. Curatolo
 , N. Zhou
 , Y. Zhao
 , C. Liu
 , A. Daerr
 , J. Tailleur
 & J. Huang

Article 
Strong coupling and pressure engineering in WSe_{2}–MoSe_{2} heterobilayers
Highquality WSe_{2}–MoSe_{2} heterostructures support strong coupling between the two layers, which is associated with tight hybridization and effective charge separation. In these structures, the bands of the interlayer excitons can be pressureengineered.
 Juan Xia
 , Jiaxu Yan
 , Zenghui Wang
 , Yongmin He
 , Yongji Gong
 , Weiqiang Chen
 , Tze Chien Sum
 , Zheng Liu
 , Pulickel M. Ajayan
 & Zexiang Shen

Letter 
Excitons bound by photon exchange
Electrons and holes in doped quantum wells cannot form bound states from usual Coulomb interaction. However, when the system is embedded in a cavity, the exchange of photons provides an effective attraction, leading to the creation of bound excitons.
 Erika Cortese
 , NgocLinh Tran
 , JeanMichel Manceau
 , Adel Bousseksou
 , Iacopo Carusotto
 , Giorgio Biasiol
 , Raffaele Colombelli
 & Simone De Liberato

Article 
A strong nogo theorem on the Wigner’s friend paradox
For a scenario of two separated but entangled observers, inequalities are derived from three fundamental assumptions. An experiment shows that these inequalities can be violated if quantum evolution is controllable on the scale of an observer.
 KokWei Bong
 , Aníbal UtrerasAlarcón
 , Farzad Ghafari
 , YeongCherng Liang
 , Nora Tischler
 , Eric G. Cavalcanti
 , Geoff J. Pryde
 & Howard M. Wiseman

Article 
Search for axionlike dark matter with ferromagnets
The presence of axionlike dark matter candidates is expected to induce an oscillating magnetic field, enhanced by a ferromagnet. Limits on the electromagnetic coupling strength of axionlike particles are reported over a mass range spanning three decades.
 Alexander V. Gramolin
 , Deniz Aybas
 , Dorian Johnson
 , Janos Adam
 & Alexander O. Sushkov

Letter 
Bloch ferromagnetism of composite fermions
Composite fermions can be tuned to very low effective density in a clean twodimensional electron gas, which allows the formation of a Bloch ferromagnet.
 Md Shafayat Hossain
 , Tongzhou Zhao
 , Songyang Pu
 , M. A. Mueed
 , M. K. Ma
 , K. A. Villegas Rosales
 , Y. J. Chung
 , L. N. Pfeiffer
 , K. W. West
 , K. W. Baldwin
 , J. K. Jain
 & M. Shayegan

Letter 
Hightemperature quantum anomalous Hall regime in a MnBi_{2}Te_{4}/Bi_{2}Te_{3} superlattice
A threedimensional topological magnetic superlattice structure exhibits the quantum anomalous Hall effect when the Fermi energy is tuned into the correct energy window.
 Haiming Deng
 , Zhiyi Chen
 , Agnieszka Wołoś
 , Marcin Konczykowski
 , Kamil Sobczak
 , Joanna Sitnicka
 , Irina V. Fedorchenko
 , Jolanta Borysiuk
 , Tristan Heider
 , Łukasz Pluciński
 , Kyungwha Park
 , Alexandru B. Georgescu
 , Jennifer Cano
 & Lia KrusinElbaum

Author Correction 
Author Correction: Experimental extraction of the quantum effective action for a nonequilibrium manybody system
 Maximilian Prüfer
 , Torsten V. Zache
 , Philipp Kunkel
 , Stefan Lannig
 , Alexis Bonnin
 , Helmut Strobel
 , Jürgen Berges
 & Markus K. Oberthaler

Letter 
Superconductivity and quantum criticality linked by the Hall effect in a strange metal
The strange metal phase in unconventional superconductors is probed by Hall measurements. This reveals that quantum criticality drives the Hall effect, which also correlates with the superconductivity. This indicates that all three may be linked.
 Ian M. Hayes
 , Nikola Maksimovic
 , Gilbert N. Lopez
 , Mun K. Chan
 , B. J. Ramshaw
 , Ross D. McDonald
 & James G. Analytis

Letter 
Direct observation of twodimensional magnons in atomically thin CrI_{3}
Magnons are collective excitations that dictate many of a magnet’s lowtemperature properties. By means of Raman scattering, the magnon spectra of CrI_{3} are measured in the monolayer limit.
 John Cenker
 , Bevin Huang
 , Nishchay Suri
 , Pearl Thijssen
 , Aaron Miller
 , Tiancheng Song
 , Takashi Taniguchi
 , Kenji Watanabe
 , Michael A. McGuire
 , Di Xiao
 & Xiaodong Xu

Letter 
Efficient learning of quantum noise
A protocol for the reliable, efficient and precise characterization of quantum noise is reported and implemented in an architecture consisting of 14 superconducting qubits. Correlated noise within arbitrary sets of qubits can be easily detected.
 Robin Harper
 , Steven T. Flammia
 & Joel J. Wallman

Letter 
Suppression of superconductivity by anisotropic strain near a nematic quantum critical point
Using doped BaFe_{2}As_{2}, the authors test whether nematicity is linked to superconductivity in the iron pnictides by applying the conjugate field to nematicity—a specific form of strain—and observe that the critical temperature decreases.
 Paul Malinowski
 , Qianni Jiang
 , Joshua J. Sanchez
 , Joshua Mutch
 , Zhaoyu Liu
 , Preston Went
 , Jian Liu
 , Philip J. Ryan
 , JongWoo Kim
 & JiunHaw Chu

Article 
Active mucus–cilia hydrodynamic coupling drives selforganization of human bronchial epithelium
The flow of fluid, such as mucus in the human respiratory tract, can affect biological function. Here the authors show that the hydrodynamic interactions mediated by mucus are essential for the directional coordination of ciliary beating in the lungs.
 Etienne Loiseau
 , Simon Gsell
 , Aude Nommick
 , Charline Jomard
 , Delphine Gras
 , Pascal Chanez
 , Umberto D’Ortona
 , Laurent Kodjabachian
 , Julien Favier
 & Annie Viallat

Article 
Photonpressure strong coupling between two superconducting circuits
Analogous to the radiationpressure coupling known in optomechanics, photonpressure interaction between superconducting circuits can reach the strong coupling regime, which allows flexible control of the electromagnetic resonator’s quantum state.
 D. Bothner
 , I. C. Rodrigues
 & G. A. Steele

Article 
Universal scaling laws rule explosive growth in human cancers
The authors investigate the relationship between the volume of malignant tumours and their metabolic processes using a large dataset of patients with cancer. They find that cancers follow a superlinear metabolic scaling law, which implies that the proliferation of cancer cells accelerates with increasing volume.
 Víctor M. PérezGarcía
 , Gabriel F. Calvo
 , Jesús J. Bosque
 , Odelaisy LeónTriana
 , Juan Jiménez
 , Julián PérezBeteta
 , Juan BelmonteBeitia
 , Manuel Valiente
 , Lucía Zhu
 , Pedro GarcíaGómez
 , Pilar SánchezGómez
 , Esther HernándezSan Miguel
 , Rafael Hortigüela
 , Youness Azimzade
 , David MolinaGarcía
 , Álvaro Martínez
 , Ángel Acosta Rojas
 , Ana Ortiz de Mendivil
 , Francois Vallette
 , Philippe Schucht
 , Michael Murek
 , María PérezCano
 , David Albillo
 , Antonio F. Honguero Martínez
 , Germán A. Jiménez Londoño
 , Estanislao Arana
 & Ana M. García Vicente

Article 
Unscrambling entanglement through a complex medium
Higherdimensional entanglement between two photons can be preserved for a photon passing through a complex medium by applying an appropriate scrambling operation on the entangled partner that does not enter the complex medium.
 Natalia Herrera Valencia
 , Suraj Goel
 , Will McCutcheon
 , Hugo Defienne
 & Mehul Malik

Article 
Casimir spring and dilution in macroscopic cavity optomechanics
An optomechanical cavity comprising a reentrant cavity and membrane resonators can be tuned in and out of the Casimir regime. At the transition between the two regimes, the mechanical resonators exhibit a change in stiffness—the Casimir spring.
 J. M. Pate
 , M. Goryachev
 , R. Y. Chiao
 , J. E. Sharping
 & M. E. Tobar

Letter 
Exact theory for superconductivity in a doped Mott insulator
The Mott insulator ground state is a crucial feature of hightemperature superconductors such as the cuprates. Here, the authors find an exactly solvable model that contains both superconductivity and Mottness.
 Philip W. Phillips
 , Luke Yeo
 & Edwin W. Huang

Article 
Tunnelling dynamics between superconducting bound states at the atomic limit
A magnetic impurity is placed on the tip of a scanning tunnelling microscope, allowing direct tunnelling between two Yu–Shiba–Rusinov bound states. This technique can probe and enhance the impurity state lifetime.
 Haonan Huang
 , Ciprian Padurariu
 , Jacob Senkpiel
 , Robert Drost
 , Alfredo Levy Yeyati
 , Juan Carlos Cuevas
 , Björn Kubala
 , Joachim Ankerhold
 , Klaus Kern
 & Christian R. Ast

Letter 
Visualization of the flat electronic band in twisted bilayer graphene near the magic angle twist
The flat electronic bands that are associated with ordered phases in twisted bilayer graphene at a magic twist angle have been imaged using angleresolved photoemission spectroscopy.
 M. Iqbal Bakti Utama
 , Roland J. Koch
 , Kyunghoon Lee
 , Nicolas Leconte
 , Hongyuan Li
 , Sihan Zhao
 , Lili Jiang
 , Jiayi Zhu
 , Kenji Watanabe
 , Takashi Taniguchi
 , Paul D. Ashby
 , Alexander WeberBargioni
 , Alex Zettl
 , Chris Jozwiak
 , Jeil Jung
 , Eli Rotenberg
 , Aaron Bostwick
 & Feng Wang

Article 
Resonant Andreev reflections probed by photonassisted tunnelling at the atomic scale
Scanning tunnelling microscopy is enhanced by microwave radiation that allows photonassisted tunnelling processes. This technique is demonstrated on impurity states in a superconductor.
 Olof Peters
 , Nils Bogdanoff
 , Sergio Acero González
 , Larissa Melischek
 , J. Rika Simon
 , Gaël Reecht
 , Clemens B. Winkelmann
 , Felix von Oppen
 & Katharina J. Franke

Article 
Implementation of a canonical phase measurement with quantum feedback
An adaptive heterodyne technique with a Josephson parametric amplifier detector allows a highprecision singleshot canonical phase measurement on a onephoton wave packet, complementing nearideal measurements of photon number or field amplitude.
 Leigh S. Martin
 , William P. Livingston
 , Shay HacohenGourgy
 , Howard M. Wiseman
 & Irfan Siddiqi

Article 
Photoexcitation of longlived transient intermediates in ultracold reactions
A transient intermediate complex in a chemical reaction—formed from collisions between molecules with a few atoms—is observed under ultracold conditions. Its lifetime can be directly measured after suppression of the photoexcitation process.
 Yu Liu
 , MingGuang Hu
 , Matthew A. Nichols
 , David D. Grimes
 , Tijs Karman
 , Hua Guo
 & KangKuen Ni

Letter 
Chiral phonons in the pseudogap phase of cuprates
Thermal transport measurements show that there is a thermal Hall effect in the outofplane direction in two cuprates in the pseudogap regime. This indicates that phonons are carrying the heat and that they have a handedness of unknown origin.
 G. Grissonnanche
 , S. Thériault
 , A. Gourgout
 , M.E. Boulanger
 , E. Lefrançois
 , A. Ataei
 , F. Laliberté
 , M. Dion
 , J.S. Zhou
 , S. Pyon
 , T. Takayama
 , H. Takagi
 , N. DoironLeyraud
 & L. Taillefer

Publisher Correction 
Publisher Correction: Universal elastic mechanism for stinger design
 Kaare H. Jensen
 , Jan Knoblauch
 , Anneline H. Christensen
 , Katrine S. Haaning
 & Keunhwan Park

Article 
NonAbelian reciprocal braiding of Weyl points and its manifestation in ZrTe
Weyl points in threedimensional systems with certain symmetry carry nonAbelian topological charges, which can be transformed via nontrivial phase factors that arise upon braiding these points inside the reciprocal space.
 Adrien Bouhon
 , QuanSheng Wu
 , RobertJan Slager
 , Hongming Weng
 , Oleg V. Yazyev
 & Tomáš Bzdušek

Author Correction 
Author Correction: Human information processing in complex networks
 Christopher W. Lynn
 , Lia Papadopoulos
 , Ari E. Kahn
 & Danielle S. Bassett

Perspective 
Topological superconductivity in hybrid devices
Hybrid devices of superconductors and semiconductor nanowires may be topological and host majorana. This Perspective summarizes the current situation of the field, and highlights the developments in materials science required to make progress.
 S. M. Frolov
 , M. J. Manfra
 & J. D. Sau

Perspective 
Preformed Cooper pairs in copper oxides and LaAlO_{3}—SrTiO_{3} heterostructures
Pairs of electrons can form above the superconducting critical temperature. The authors review the similarities and differences in this phenomenology in copperbased superconductors and oxide heterostructures.
 Ivan Božović
 & Jeremy Levy