Article
Multidisciplinary Sciences
Shubo Wang, Guanqing Zhang, Xulong Wang, Qing Tong, Jensen Li, Guancong Ma
Summary: The study demonstrates the existence of acoustic spin-orbit interactions and rich phenomena beyond traditional acoustic systems through theoretical and experimental evidence of artificial transversality in airborne sound in an acoustic micropolar metamaterial.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
J. Randall, C. E. Bradley, F. van der Gronden, A. Galicia, M. H. Abobeih, M. Markham, D. J. Twitchen, F. Machado, N. Y. Yao, T. H. Taminiau
Summary: The study observes characteristic features of the many-body-localized discrete time crystal (DTC) using a quantum simulation platform, demonstrating long-lived period-doubled oscillations and showing time-crystalline order across the many-body spectrum. The results are consistent with the realization of an out-of-equilibrium Floquet phase of matter and introduce a programmable quantum simulator based on solid-state spins for exploring many-body physics.
Article
Multidisciplinary Sciences
Sebastian Geier, Nithiwadee Thaicharoen, Clement Hainaut, Titus Franz, Andre Salzinger, Annika Tebben, David Grimshandl, Gerhard Zurn, Matthias Weidemuller
Summary: Controlling interactions is crucial in quantum engineering of many-body systems. By applying time-periodic driving, a natural many-body Hamiltonian can be transformed into an effective target Hamiltonian with different dynamics. Demonstration in an experimental setting shows modification of relaxation behavior of total spin by changing symmetry properties of the effective Hamiltonian through spin manipulations.
Article
Quantum Science & Technology
Ivana Dimitrova, Stuart Flannigan, Yoo Kyung Lee, Hanzhen Lin, Jesse Amato-Grill, Niklas Jepsen, Ieva Cepaite, Andrew J. Daley, Wolfgang Ketterle
Summary: By manipulating the spin states of ultracold atoms in an optical lattice system, a transition from a fully magnetized state to a correlated zero-magnetization state has been achieved, and the formation of correlations has been demonstrated. These findings highlight the potential and challenges for preparing many-body eigenstates of spin Hamiltonians through adiabatic preparation protocols.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Walter Hahn, V. V. Dobrovitski
Summary: Long-lived coherences emerge under periodic pulse driving in disordered ensembles of strongly interacting spins, with potential for future quantum technologies. The physical origin and properties of this phenomenon remain poorly understood, but are found to exist in ensembles of different dimensionalities, from two-dimensional to infinite-dimensional systems. The transition between dimensions shows qualitatively similar long-time coherence dynamics, with dimensionality-dependent singularity in short-time behavior. The common physical origin of long-lived coherences is suggested to be a generic feature of strongly coupled spin systems with positional disorder. These results lay the foundation for utilizing long-lived coherences in various applications, ranging from quantum sensing to quantum information processing.
NEW JOURNAL OF PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Robert E. Throckmorton, S. Das Sarma
Summary: The research shows that many-body localization effects can be observed in a finite chain of exchange-coupled spin qubits in semiconductors. The spin-spin correlation function is proposed as a new measured quantity in experiments with potential solid-state quantum computing platforms. The relationship between delocalized and localized phases and the retention of memory in spin-spin correlation functions is studied, with the counterintuitive finding of no clear tendency towards localization with increasing charge noise in small systems.
Article
Materials Science, Multidisciplinary
Subhadeep Bandyopadhyay, Finn Lasse Buessen, Ritwik Das, Franz G. Utermohlen, Nandini Trivedi, Arun Paramekanti, Indra Dasgupta
Summary: We derive the microscopic spin Hamiltonian for rhombohedral CrI3 using first-principles calculations, and find dominant ferromagnetic exchange interactions as well as Dzyaloshinskii-Moriya interaction and Kitaev coupling. We also study the magnetic phase transition temperature and its evolution with applied magnetic field using Monte Carlo simulations.
Article
Materials Science, Multidisciplinary
Shane Dooley, Graham Kells
Summary: Recent studies have shown that quantum many-body scarring can hinder the thermalization process of certain isolated quantum systems starting from specific initial states. In this paper, a class of spin chain models parameterized by a discrete variable l is constructed to control the strength of the dynamical constraint. It is found that by increasing the value of l, the constraint becomes weaker, resulting in fewer excluded states during the dynamics. By weakening the constraint to l >= 4, a more extreme version of quantum scarring is observed with an exponential growth of scar states as the system size increases.
Article
Multidisciplinary Sciences
Junxiang Jia, Elizabeth Marcellina, Anirban Das, Michael S. Lodge, BaoKai Wang, Duc-Quan Ho, Riddhi Biswas, Tuan Anh Pham, Wei Tao, Cheng-Yi Huang, Hsin Lin, Arun Bansil, Shantanu Mukherjee, Bent Weber
Summary: In one-dimensional systems, electron interactions lead to the breakdown of Fermi liquid theory and the formation of a Tomonaga-Luttinger Liquid. Recent studies have shown the existence of this state in the helical edge states of quantum spin Hall insulators. The authors demonstrate that the many-body interactions in the helical Tomonaga-Luttinger Liquid of 1T'-WTe2 can be effectively controlled by the dielectric screening via the substrate.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Santi P. Rath, Damien Thompson, Sreebrata Goswami, Sreetosh Goswami
Summary: The study presents the design of temperature-resilient molecular memristors that allow for control of electronic transport by manipulating the interactions between molecules and counterions. These memristors exhibit various functionalities within a single device, and offer a deterministic design route for engineering neuromorphic devices.
ADVANCED MATERIALS
(2023)
Article
Physics, Multidisciplinary
Lea -Marina Steinert, Philip Osterholz, Robin Eberhard, Lorenzo Festa, Nikolaus Lorenz, Zaijun Chen, Arno Trautmann, Christian Gross
Summary: Researchers have achieved spatially tunable interactions in analog quantum simulators by manipulating Rydberg atoms, expanding the capabilities of these simulators.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
A. Hijano, E. J. Rodriguez, D. Bercioux, D. Frustaglia
Summary: This work investigates the response of spin carriers to effective field textures in curved one-dimensional interferometric circuits, finding that the interplay between Rashba and Dresselhaus spin-orbit interactions and circuit geometry modifies the geometric characteristics of spinors, resulting in the localization of electronic wave function and suppression of quantum conductance.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Multidisciplinary
I. Bobkova, A. M. Bobkov, M. A. Silaev
Summary: Recent research focuses on ordered states that appear exclusively under time-dependent drives in quantum matter. A class of systems featuring dynamic spin-triplet superconducting order stimulated by alternating electric fields have been demonstrated. This effect is based on the interplay of ferromagnetism, interfacial spin-orbital coupling, and condensate motion driven by the field, converting hidden static p-wave order into dynamic s-wave equal-spin triplet correlations.
PHYSICAL REVIEW LETTERS
(2021)
Article
Mechanics
Yoshihiro Nishiyama
Summary: The transverse-field XY spin chain with competing antiferromagnetic long-range interactions was numerically investigated to clarify the character of the transverse-field-driven phase transition. The fidelity susceptibility was used to detect the multi-criticality around the XX-symmetric point systematically. The results showed that the transverse field-driven phase transition belongs to the 2D-Ising universality class in the small-a regime.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2023)
Article
Materials Science, Multidisciplinary
John Schliemann, Joao Vitor Costa, Paul Wenk, J. Carlos Egues
Summary: The study investigates transitions between ergodic and many-body localized phases in spin systems subjected to quenched disorder, finding key features of the transitions through exact numerical diagonalization and random matrix techniques.
Article
Physics, Multidisciplinary
Yuki Susa, Hidetoshi Nishimori
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2020)
Review
Physics, Multidisciplinary
Philipp Hauke, Helmut G. Katzgraber, Wolfgang Lechner, Hidetoshi Nishimori, William D. Oliver
REPORTS ON PROGRESS IN PHYSICS
(2020)
Article
Biochemical Research Methods
Beatriz Seoane, Alessandra Carbone
Summary: The study explores the relationship between incomplete protein structure and the interaction interfaces in multiple complexes, revealing that interaction interfaces and soft disordered regions often involve the same amino acids and soft structural disorder may influence the assembly order of complexes.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Article
Mechanics
I Paga, Q. Zhai, M. Baity-Jesi, E. Calore, A. Cruz, L. A. Fernandez, J. M. Gil-Narvion, I Gonzalez-Adalid Pemartin, A. Gordillo-Guerrero, D. Iniguez, A. Maiorano, E. Marinari, V Martin-Mayor, J. Moreno-Gordo, A. Munoz-Sudupe, D. Navarro, R. L. Orbach, G. Parisi, S. Perez-Gaviro, F. Ricci-Tersenghi, J. J. Ruiz-Lorenzo, S. F. Schifano, D. L. Schlagel, B. Seoane, A. Tarancon, R. Tripiccione, D. Yllanes
Summary: The research focuses on a microscopic analysis of spin-glass dynamics through experiments and simulations, with a particular emphasis on the evolution of spin-glass correlation length at different times and temperatures.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2021)
Article
Multidisciplinary Sciences
Beatriz Seoane
Summary: This study reveals the infection fatality rate and population infection ratio of SARS-CoV-2 in different age segments and countries by exploiting the observed increase in mortality rate with age and antibody prevalence tests. The research shows significant variations in total IFR among different countries.
Article
Physics, Multidisciplinary
Marco Baity-Jesi, Enrico Calore, Andres Cruz, Luis Antonio Fernandez, Jose Miguel Gil-Narvion, Isidoro Gonzalez-Adalid Pemartin, Antonio Gordillo-Guerrero, David Iniguez, Andrea Maiorano, Enzo Marinari, Victor Martin-Mayor, Javier Moreno-Gordo, Antonio Munoz-Sudupe, Denis Navarro, Ilaria Paga, Giorgio Parisi, Sergio Perez-Gaviro, Federico Ricci-Tersenghi, Juan Jesus Ruiz-Lorenzo, Sebastiano Fabio Schifano, Beatriz Seoane, Alfonso Tarancon, Raffaele Tripiccione, David Yllanes
Summary: This study reveals the presence of dynamic temperature chaos in non-equilibrium dynamics, closely resembling equilibrium temperature chaos. The dynamic temperature chaos effect is shown to be controlled by the spin-glass coherence length xi.
COMMUNICATIONS PHYSICS
(2021)
Article
Physics, Multidisciplinary
Hidetoshi Nishimori
Summary: Research has shown that the average energy of the Ising spin glass exhibits no singularity along a specific line in the phase diagram and this result can be extended to cases with correlated disorder. By investigating a type of correlated disorder that suppresses frustration, it is found that the average energy can be expressed as the expectation value of a local gauge variable of the Z(2) gauge Higgs model, indicating no singularity despite the possibility of a phase transition in the subspace. While obtaining an explicit expression for the energy is challenging compared to cases with uncorrelated disorder, an exact closed-form expression for a physical quantity related to the energy is derived in three dimensions using a duality relation.认。
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2022)
Article
Physics, Applied
Yuki Bando, Ka-Wa Yip, Huo Chen, Daniel A. Lidar, Hidetoshi Nishimori
Summary: This paper reports the results of reverse annealing experiments using the D-Wave 2000Q device. The study focuses on the p = 2 p-spin problem and observes a strong asymmetry in the partial success probabilities. By performing open-system simulations, it is found that the adiabatic master equation fails to agree with the experiment, while the polaron transformed Redfield equation is in close agreement.
PHYSICAL REVIEW APPLIED
(2022)
Article
Mechanics
Aurelien Decelle, Cyril Furtlehner, Beatriz Seoane
Summary: The mixing time is crucial in training restricted Boltzmann machines (RBMs) and determines the dynamics and stability of the trained model. RBMs operate in two different regimes, equilibrium and out-of-equilibrium, depending on the interplay between the mixing time and the number of steps used to approximate the gradient.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Biochemical Research Methods
Beatriz Seoane, Alessandra Carbone
Summary: This study provides statistical evidence for the involvement of highly mobile and disordered regions in protein complex assembly. The results show that there is a general mechanism involving soft disorder in protein assembly, and the location of soft disordered residues changes with the increasing number of partners. The study also investigates the relationship between the confidence metric of AlphaFold2 and soft disorder.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Physics, Multidisciplinary
Adriano Barra, Giovanni Catania, Aurelien Decelle, Beatriz Seoane
Summary: In this paper, the equilibrium properties of bidirectional associative memories (BAMs) are investigated. The computational capabilities of a stochastic extension of BAM are characterized using statistical physics techniques. The phase diagram of the model at the replica symmetric level is provided, and the transition curves are analyzed as control parameters are tuned. The retrieval mechanism in BAM is explained by analogy with two interacting Hopfield models, and the potential equivalence with two coupled Restricted Boltzmann Machines is discussed.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2023)
Article
Physics, Multidisciplinary
Nicolas Bereux, Aurelien Decelle, Cyril Furtlehner, Beatriz Seoane
Summary: Restricted Boltzmann Machines are powerful but often unstable in training. This work shows that the divergent Monte Carlo mixing times are related to phase coexistence, and proposes the Tethered Monte Carlo (TMC) method which can accelerate sampling and improve training. However, the limitations include the restriction to low-dimensional datasets and the inability to perform parallel updates.
Article
Physics, Multidisciplinary
Kabuki Takada, Shigetoshi Sota, Seiji Yunoki, Bibek Pokharel, Hidetoshi Nishimori, Daniel A. Lidar
Summary: The role of nonstoquasticity in affecting topological phase transitions in quantum annealing and adiabatic quantum computing has been studied using a quantum Ising model, revealing that nonstoquastic catalysts are generally insufficient for removing topological obstacles.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Luise Prielinger, Andreas Hartmann, Yu Yamashiro, Kohji Nishimura, Wolfgang Lechner, Hidetoshi Nishimori
Summary: This study introduces a new method to accelerate convergence to solutions in quantum annealing and validates it in the p-spin model, showing significant improvements in reducing residual energy and increasing ground-state fidelity. Compared to traditional methods, it can effectively reduce time complexity in certain parameter ranges, but may not always lead to drastic exponential speedups.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Optics
Yuki Susa, Hidetoshi Nishimori
Summary: The nonmonotonic annealing schedules optimize the performance of quantum annealing for the all-to-all-interacting Ising model, improving the final ground-state fidelity without a notable increase in the instantaneous energy gap, highlighting the importance of a dynamical viewpoint alongside static analyses in the study of diabatic processes.
