Article
Multidisciplinary Sciences
Cheng Chen, Guillaume Bornet, Marcus Bintz, Gabriel Emperauger, Lucas Leclerc, Vincent S. Liu, Pascal Scholl, Daniel Barredo, Johannes Hauschild, Shubhayu Chatterjee, Michael Schuler, Andreas M. Laeuchli, Michael P. Zaletel, Thierry Lahaye, Norman Y. Yao, Antoine Browaeys
Summary: Spontaneous symmetry breaking is the basis of classifying phases of matter and their transitions, and continuous symmetry breaking leads to the emergence of gapless Goldstone modes that control the thermodynamic stability of the ordered phase. In this study, a two-dimensional dipolar XY model is realized using a programmable Rydberg quantum simulator, and the presence of long-range XY order is characterized. This work complements recent studies on Ising-type interactions showing discrete spin rotation symmetry using the Rydberg-blockade mechanism.
Article
Materials Science, Multidisciplinary
Ruipeng Li, Jonas von Milczewski, Atac Imamoglu, Rafal Oldziejewski, Richard Schmidt
Summary: We study induced pairing between two identical fermions mediated by an attractively interacting quantum impurity in two-dimensional systems. Based on a stochastic variational method (SVM), we investigate the influence of confinement and finite interaction range on the ground state of the quantum three-body problem. We find that confinement and a finite interaction range can enhance trimer stability and overcome Coulomb repulsion, opening possibilities for electron pairing beyond conventional paradigms.
Article
Physics, Multidisciplinary
Zhaoxuan Zhu, Hepeng Yao, Laurent Sanchez-Palencia
Summary: Quantum simulation of quasicrystals in synthetic bosonic matter has opened up possibilities for exploring these fascinating systems across a wide range of parameters. However, thermal fluctuations and their competition with quantum coherence can have a significant impact on the quantum phases at zero temperature. In this study, we determine the thermodynamic phase diagram of interacting bosons in a two-dimensional, homogeneous quasicrystal potential using quantum Monte Carlo simulations. We carefully consider finite-size effects and systematically distinguish between quantum and thermal phases. Our results reveal the stabilization of a genuine Bose glass phase against the normal fluid in significant parameter ranges. We also discuss the experimental implications and interpret our findings for strong interactions using a fermionization picture.
PHYSICAL REVIEW LETTERS
(2023)
Article
Optics
Raul Bombin, Viktor Cikojevic, Juan Sanchez-Baena, Jordi Boronat
Summary: This study focuses on the repulsive Fermi polaron in a two-component, two-dimensional system of fermionic atoms, investigating properties such as polaron energy, quasiparticle residue, and effective mass using the diffusion Monte Carlo method. The results highlight the importance of considering the effective range and scattering length to reproduce experimental results, as well as the establishment of universality through different model potentials for the interaction between the Fermi sea and the impurity. This underscores the significance of quantum fluctuations and beyond mean-field effects in accurately describing the Fermi polaron problem.
Article
Mechanics
Isabelle Bouchoule, Jerome Dubail
Summary: This article reviews the recent progress in the generalized hydrodynamics (GHD) behavior of the one-dimensional Bose gas with contact repulsive interactions, known as the Lieb-Liniger gas. The theory and key concepts of the Lieb-Liniger gas, including rapidities and rapidity distribution, are introduced. The asymptotic regimes and approximate descriptions of the Lieb-Liniger gas are presented. Experimental results in cold atom experiments, including the realization of the Lieb-Liniger model and tests of the GHD theory, are discussed. The effects of atom losses and some open questions are also reviewed.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Materials Science, Multidisciplinary
Alessandro Santini, Giuseppe E. Santoro, Mario Collura
Summary: This study investigates the influence of periodic imperfect global spin flips on the two-dimensional quantum Ising model in the absence of disorder. By employing a combination of exact diagonalization and tensor-network methods, it is demonstrated that the system can sustain a spontaneously broken discrete time-translation symmetry, resulting in a two-dimensional discrete time-crystal (DTC) prethermal phase. The study also reveals that the long-lived stability of the DTC relies on the existence of a long-range ordered phase at finite temperature.
Article
Optics
Chang-Xiao Li, Sheng Yang, Jing-Bo Xu
Summary: This study investigates the multipartite entanglement and quantum criticality of neutral atoms on a two-dimensional square lattice interacting via laser excitation. The research demonstrates that there are peaks in the first derivative of residual entanglement near the critical point, and the critical behaviors obey conventional finite-sized scaling. A sharp peak in the fidelity susceptibility near the critical point is also observed, with the critical exponent of the associated correlation length determined through finite size analysis.
Article
Physics, Multidisciplinary
Moroni Santiago-Garcia, Arturo Camacho-Guardian
Summary: In this article, the mediated interactions of collective excitations in an ultracold gas of hard-core bosons are studied, and it is shown that the induced interaction supports two-body states strongly dependent on the properties of the hard-core boson gas. The ability to control the nature of the two-body bound states motivates the study of superfluid phases, and the authors demonstrate how the superfluid parameters and critical temperatures can be tuned in their system. This finding may have implications for future theoretical and experimental studies with ultracold gases and solid-state systems.
NEW JOURNAL OF PHYSICS
(2023)
Article
Multidisciplinary Sciences
Caitlin Walsh, Maxime Charlebois, Patrick Semon, Giovanni Sordi, Andre-Marie S. Tremblay
Summary: The study in a doped Mott insulator using the two-dimensional Hubbard model reveals that the local entropy can detect the superconducting state, with the difference in local entropy between superconducting and normal states following the potential energy difference. The thermodynamic entropy is suppressed in the superconducting state and decreases monotonically with decreasing doping levels, while total mutual information, quantifying quantum and classical correlations, is amplified in the superconducting state of the doped Mott insulator for all doping levels showing a broad peak versus doping due to competing quantum and classical effects.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Quantum Science & Technology
Andreas Kruckenhauser, Rick van Bijnen, Torsten Zache, Marco Di Liberto, Peter Zoller
Summary: In this study, a toolbox for manipulating arrays of high-dimensional hydrogen-like Rydberg atoms is developed. The researchers utilize the SO(4) symmetry to characterize the effects of various fields on the well-structured manifolds of these states. They also construct generalized large-spin Heisenberg models and demonstrate their applications in quantum simulation and quantum information processing.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Optics
Jan Philipp Klinger, Martin Gaerttner
Summary: This study investigates excitation transport in a two-dimensional system of randomly assembled spins with power-law hopping, which can be realized in cold atom quantum simulators with Rydberg atoms. The research finds that at strong disorder, localized eigenstates with power-law tails are predominantly observed, but as disorder weakens, seemingly multifractal states appear. In the infinite-size limit, all states eventually become localized.
Review
Physics, Multidisciplinary
Fangli Liu, Zhi-Cheng Yang, Przemyslaw Bienias, Thomas Iadecola, Alexey Gorshkov
Summary: This study investigates the effect of positional disorder on Rydberg atoms trapped in a 2D square lattice and uncovers three different regimes, which are absent in other systems. The use of quench dynamics is proposed for experimental probing of these regimes.
PHYSICAL REVIEW LETTERS
(2022)
Article
Quantum Science & Technology
Sven Jandura, Guido Pupillo
Summary: In this study, we identify time-optimal laser pulses for implementing the controlled-Z gate and its generalization, the C(2)Z gate, for Rydberg atoms. The pulses are optimized using quantum optimal control techniques, resulting in smooth waveforms with only a few variational parameters. The short gate duration helps mitigate errors while achieving theoretical gate fidelities compatible with error correction.
Article
Chemistry, Multidisciplinary
Ignacio R. Sola, Vladimir S. Malinovsky, Jaewook Ahn, Seokmin Shin, Bo Y. Chang
Summary: By controlling the temporal and spatial features of light, we propose a novel protocol for preparing entangling gates on trapped atoms. The protocol is robust to variations in pulse areas and atom positions, and it uses structured light. We analyze the gate fidelity map and propose generalizations for multi-pulse sequences.
Article
Materials Science, Multidisciplinary
Qing-Wei Wang
Summary: The dynamical correlations of hard-core anyons in one-dimensional lattices are studied in this paper. Exact expressions for the Green's function, the spectral function, and the out-of-time-ordered correlators are obtained. Three main singularity lines are observed in the anyonic spectral function, which correspond to a peak in the momentum distribution function and a power-law singularity in the local spectral function. The anyonic statistics also induce spatial asymmetry in the correlations. Light-cone dynamics are observed in the information spreading characterized by the out-of-time-ordered correlators.
Article
Physics, Multidisciplinary
Filippo M. Gambetta, Chi Zhang, Markus Hennrich, Igor Lesanovsky, Weibin Li
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Edward Gillman, Federico Carollo, Igor Lesanovsky
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
Federico Carollo, Kay Brandner, Igor Lesanovsky
PHYSICAL REVIEW LETTERS
(2020)
Article
Optics
G. Buonaiuto, I Lesanovsky, B. Olmos
Summary: In this theoretical investigation, we studied the feedback control of a laser-driven one-dimensional atomic chain interfaced with a nanofiber. By measuring guided light through photon counting or homodyne detection, the system's statistics can be controlled. The feedback scheme allows enhancement of photon counting rate and fluctuations, and alteration of the many-body state of the atom chain, providing insights on dynamics in light-matter networks with experimental setups.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Computer Science, Information Systems
Charles E. Dickerson, Michael Wilkinson, Eugenie Hunsicker, Siyuan Ji, Mole Li, Yves Bernard, Graham Bleakley, Peter Denno
Summary: The article introduces a fundamental approach to architecture definition, emphasizing the importance of a precise definition for the term "architecture." The definition adopted in ISO/IEC/IEEE 42010:2011 standard was reviewed in 2018 by the working group JTC1/SC7/WG42.
IEEE SYSTEMS JOURNAL
(2021)
Proceedings Paper
Computer Science, Theory & Methods
Nan Chen, Shuai Zhao, Ian Gray, Alan Burns, Siyuan Ji, Wanli Chang
Summary: This paper introduces a fault-tolerance solution for resource sharing in mixed-criticality systems, addressing the gap between reliability and resource sharing. By proposing the first fault-tolerance multiprocessor resource sharing protocol and a system execution model, the aim is to minimize blocking time while satisfying reliability requirements.
2022 IEEE 28TH REAL-TIME AND EMBEDDED TECHNOLOGY AND APPLICATIONS SYMPOSIUM (RTAS)
(2022)
Proceedings Paper
Education, Scientific Disciplines
Siyuan Ji, Tangming Yuan
Summary: This article investigates the perceptions of students and tutors in an online learning program towards conversational Intelligent Tutoring Systems, highlighting the potential enhancement of learning experience for both parties.
PROCEEDINGS OF THE 2022 IEEE GLOBAL ENGINEERING EDUCATION CONFERENCE (EDUCON 2022)
(2022)
Article
Optics
B. Olmos, C. Liedl, I Lesanovsky, P. Schneeweiss
Summary: The research investigates light scattering from an array of atoms into the guided modes of a waveguide, finding an enhanced scattering phenomenon and a modified Bragg condition. Different parameter regimes are identified for the scattering rate dependence on the atom number, and the findings are shown to be independent of the asymmetry of the atom-light coupling.
Article
Physics, Multidisciplinary
Dario Cilluffo, Giuseppe Buonaiuto, Salvatore Lorenzo, G. Massimo Palma, Francesco Ciccarello, Federico Carollo, Igor Lesanovsky
PHYSICAL REVIEW RESEARCH
(2020)
Article
Physics, Fluids & Plasmas
Luke Causer, Igor Lesanovsky, Mari Carmen Banuls, Juan P. Garrahan
Article
Optics
B. Olmos, G. Buonaiuto, P. Schneeweiss, I Lesanovsky
Article
Physics, Multidisciplinary
Michele Burrello, Igor Lesanovsky, Andrea Trombettoni
PHYSICAL REVIEW RESEARCH
(2020)
Article
Optics
Andreas Kouzelis, Katarzyna Macieszczak, Jiri Minar, Igor Lesanovsky
Article
Physics, Multidisciplinary
Eliana Fiorelli, Pietro Rotondo, Federico Carollo, Matteo Marcuzzi, Igor Lesanovsky
PHYSICAL REVIEW RESEARCH
(2020)
Article
Optics
Yijia Zhou, Igor Lesanovsky, Thomas Fernholz, Weibin Li
