Article
Physics, Multidisciplinary
Hyunsoo Ha, Alan Morningstar, David A. Huse
Summary: Many-body localized (MBL) systems cannot reach thermal equilibrium under their own dynamics, even though they are interacting, nonintegrable, and in an extensively excited state. One instability toward thermalization of MBL systems is the avalanche, where a locally thermalizing rare region is able to spread thermalization through the full system. We find a detailed connection between many-body resonances and avalanches in MBL systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Fluids & Plasmas
Saikat Mondal, Sourav Bhattacharjee
Summary: In this study, we investigate the charging of a quantum battery by modulating the Hamiltonian and find that resonance tunneling at specific drive frequencies can enhance energy transfer and improve energy storage stability. Breaking the integrability allows for global charging of the battery, but there is no quantum advantage in terms of charging power.
Article
Materials Science, Multidisciplinary
Yuan -Hang Zhang, Massimiliano Di Ventra
Summary: Inspired by transformers, TQS is a versatile machine learning model for quantum many-body problems, capable of generating phase diagrams, predicting experimental measurements, and adapting to new systems. It produces accurate results with small computational cost and can be easily adapted to new tasks, making it a general-purpose model for challenging quantum problems.
Article
Physics, Multidisciplinary
S. J. Garratt, J. T. Chalker
Summary: The study presents a framework where the transition between a many-body localized phase and an ergodic phase is achieved through symmetry breaking. It explores random Floquet spin chains and how their averaged spectral form factor is influenced by the leading eigenvalues of a transfer matrix. The research identifies broken symmetry within the transfer matrix and introduces a local order parameter for the transition, showing that long-ranged correlation functions are only present in the ergodic phase.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
P. Prelovsek, M. Mierzejewski, J. Krsnik, O. S. Barisic
Summary: The dynamics in the standard model of many-body localization is confined to disconnected many-body clusters in the Fock space for strong disorders. The MBL transition is located via the universal cluster distribution and the emergence of the macroscopic cluster. The relaxation processes capture well the diffusion transport found in the full quantum model, with an anomalous transport emerging from weak links between MB states in a broad transient regime.
Article
Physics, Mathematical
Shirshendu Ganguly, Theo McKenzie, Sidhanth Mohanty, Nikhil Srivastava
Summary: For a random d-regular graph G on n vertices, we prove that with high probability, every eigenvector of G's adjacency matrix with eigenvalue less than -2 root d - 2 - alpha has at least Omega (n/polylog(n)) nodal domains.
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2023)
Article
Optics
D. Zhu, S. Johri, N. H. Nguyen, C. Huerta Alderete, K. A. Landsman, N. M. Linke, C. Monroe, A. Y. Matsuura
Summary: A disordered quantum system with interacting particles exhibits localized behavior when disorder is large compared to interaction strength. Spectral functions of local operators can survive noise and serve as a robust and scalable diagnostic of many-body localization. An error-mitigation technique on a trapped-ion quantum computer effectively removes noise from measurements, allowing clear localization signatures to emerge.
Article
Multidisciplinary Sciences
Amos Chan, Saumya Shivam, David A. Huse, Andrea De Luca
Summary: The effect of translational invariance in space and time on many-body quantum chaotic systems is studied using random quantum circuits. It is found that there are universal scaling laws describing the system, even without knowing the microscopic details. The emergence of random matrix theory behavior is delayed by translational invariance, which introduces additional mechanisms via novel Feynman diagrams.
NATURE COMMUNICATIONS
(2022)
Correction
Multidisciplinary Sciences
Dayou Yang, Andrey Grankin, Lukas M. Sieberer, Denis V. Vasilyev, Peter Zoller
Summary: The paper has been corrected and the updated version can be found at the provided link.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Sayantan Dutta, Adrian Basarab, Bertrand Georgeot, Denis Kouame
Summary: The paper introduces a novel image denoising algorithm that exploits image-dependent basis and a concept similar to interaction in quantum mechanics to efficiently preserve the local structures of real images. The algorithm is versatile and can adapt to image-independent or image-dependent noise scenarios.
Article
Materials Science, Multidisciplinary
Adam Nahum, Sthitadhi Roy, Sagar Vijay, Tianci Zhou
Summary: We study the real-time correlators of local operators in chaotic quantum many-body systems. These correlators exhibit universal structure at late times, determined by the geometry of the dominant operator-space Feynman trajectories. The decay of local correlations in the absence of conservation laws is described by rate functions associated with spacetime structures. In 1+1D, the operator histories can exhibit a phase transition, leading to singular behavior in the rate function. In higher-dimensional systems, thin trajectories always dominate. We also discuss the deducibility of butterfly velocity from time-ordered two-point functions and the computation of correlators in random circuits.
Article
Engineering, Electrical & Electronic
Sayantan Dutta, Adrian Basarab, Bertrand Georgeot, Denis Kouame
Summary: This paper proposes a novel image denoising algorithm that exploits an image-dependent basis inspired by quantum mechanics. By formalizing similarity measures in local image neighborhoods through terms similar to interaction, the algorithm can effectively preserve the local structures of real images. The adaptive nature of the basis expands its application to image-independent or image-dependent noise scenarios.
Article
Multidisciplinary Sciences
D. Bluvstein, A. Omran, H. Levine, A. Keesling, G. Semeghini, S. Ebadi, T. T. Wang, A. A. Michailidis, N. Maskara, W. W. Ho, S. Choi, M. Serbyn, M. Greiner, V. Vuletic, M. D. Lukin
Summary: The study demonstrates that coherent revivals associated with quantum many-body scars can be stabilized by periodic driving, generating a robust subharmonic response akin to discrete timecrystalline order. This finding provides new ways to control complex dynamics in many-body systems and may have potential applications in quantum information science.
Article
Quantum Science & Technology
Jirawat Tangpanitanon, Supanut Thanasilp, Marc-Antoine Lemonde, Ninnat Dangniam, Dimitris G. Angelakis
Summary: This work formally proves that the sampling of bit-strings from a periodic evolution of a unitary drawn from the circular orthogonal ensemble (COE) cannot be efficiently simulated with classical computers. As the statistical properties of COE coincide with a large class of driven analog quantum systems, this suggests that those driven systems could potentially have a sampling quantum advantage. Numerical examples of driven disordered Ising chains and 1D driven Bose-Hubbard model are provided to support this.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Harold Ollivier
Summary: We investigate the emergence of objectivity for quantum many-body systems in the absence of environmental interference. We extend the findings of Reidel (2017) to the case where the system is in a mixed state, measurements are performed using POVMs, and the measurement outcomes are imperfect. By introducing a new condition on states and measurements, we are able to achieve complete classicality for any number of observers. Furthermore, we demonstrate that the evolution of quantum many-body systems is expected to yield states satisfying this condition when the corresponding measurement outcomes are redundant.
Article
Physics, Mathematical
Cedric Bernardin, Francois Huveneers, Stefano Olla
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2019)
Article
Multidisciplinary Sciences
J-Z Ma, S. M. Nie, C. J. Yi, J. Jandke, T. Shang, M. Y. Yao, M. Naamneh, L. Q. Yan, Y. Sun, A. Chikina, V. N. Strocov, M. Medarde, M. Song, Y-M Xiong, G. Xu, W. Wulfhekel, J. Mesot, M. Reticcioli, C. Franchini, C. Mudry, M. Mueller, Y. G. Shi, T. Qian, H. Ding, M. Shi
Article
Physics, Mathematical
Wojciech De Roeck, Francois Huveneers, Stefano Olla
JOURNAL OF STATISTICAL PHYSICS
(2020)
Article
Multidisciplinary Sciences
Philipp Werner, Martin Eckstein, Markus Mueller, Gil Refael
NATURE COMMUNICATIONS
(2019)
Article
Biochemistry & Molecular Biology
Markus Mueller, Peter M. Derlet, Christopher Mudry, Gabriel Aeppli
Article
Physics, Multidisciplinary
Z. Guguchia, D. Das, C. N. Wang, T. Adachi, N. Kitajima, M. Elender, F. Brueckner, S. Ghosh, V Grinenko, T. Shiroka, M. Mueller, C. Mudry, C. Baines, M. Bartkowiak, Y. Koike, A. Amato, J. M. Tranquada, H. H. Klauss, C. W. Hicks, H. Luetkens
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
Yves Blickenstorfer, Markus Mueller, Roland Dreyfus, Andreas Michael Reichmuth, Christof Fattinger, Andreas Frutiger
Summary: Diffractometric biosensing is a promising technology that overcomes limitations of refractometric biosensors, but it lacks general quantitative analysis, hindering its wider recognition and comparison with other techniques.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Physical
Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosalbez-Martinez, Oleg Yazyev, Wenhui Fan, Hannes Huebener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Mueller, Ming Shi
Summary: Using angle-resolved photoemission spectroscopy, the authors detected mobile bound states of excitons in quasi-one-dimensional metallic TaSe3, providing evidence for the elusive exciton mobility in metals.
Article
Materials Science, Multidisciplinary
Jiajun Li, Markus Muller, Aaram J. Kim, Andreas M. Lauchli, Philipp Werner
Summary: Recent advances in ultrafast pump-probe spectroscopy have allowed the exploration of hidden phases of correlated matter, including light-induced superconducting states. A new type of chiral superconducting phase has been induced in frustrated Mott insulators through photodoping, forming a condensate of doublons and holons. This metastable phase features a spatially varying order parameter with a 120 degrees phase twist, breaking time-reversal and inversion symmetry. The presented results demonstrate the chiral nature of the light-induced superconducting state and its distinguishing properties, which can be observed in pump-probe experiments.
Article
Optics
Keita Omiya, Markus Muller
Summary: We study the nature of the ergodicity-breaking quantum many-body scar states in the PXP model and reveal a common structure that gives rise to these states. We provide an extension of the PXP model that can host exact quantum scars and show that existing scar-stabilizing extensions can be understood within this framework. The exact scar states are obtained as large spin states of explicitly constructed pseudospins, and the quasiperiodic motion is shown to be the projection of the large pseudospin's precession onto the Rydberg-constrained subspace.
Article
Materials Science, Multidisciplinary
A. Beckert, M. Grimm, R. Hermans, J. R. Freeman, E. H. Linfield, A. G. Davies, M. Muller, H. Sigg, S. Gerber, G. Matmon, G. Aeppli
Summary: The crystal field energy levels and magnetic moments of the insulating rare-earth magnet LiY1-xHoxF4 were investigated, including the hyperfine corrections, and the far-infrared, low-temperature refractive index of the material was determined.
Article
Quantum Science & Technology
Manuel Grimm, Adrian Beckert, Gabriel Aeppli, Markus Mueller
Summary: The proposed scheme for universal quantum computing is based on Kramers rare-earth ions, utilizing their nuclear spins as passive qubits and actively switching on qubits optically. The implementation of controlled NOT (CNOT) gates relies on the magnetic dipole interaction between excited crystal field states. Compared to other proposals, such as the Si:P proposal, this scheme shows significantly improved gate times for CNOT gates.
Article
Physics, Multidisciplinary
Francois Huveneers, Jani Lukkarinen
PHYSICAL REVIEW RESEARCH
(2020)
Article
Physics, Multidisciplinary
Andrea Scaramucci, Hiroshi Shinaoka, Maxim Mostovoy, Rui Lin, Christopher Mudry, Markus Mueller
PHYSICAL REVIEW RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
Ivo A. Maceira, Frederic Mila, Markus Mueller