Related papers: Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions

Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions

URL: http://arxiv.org/abs/2307.04802v2
Date: Wed, 22 May 2024 06:08:17 GMT
Title: Out-of-equilibrium dynamics of quantum many-body systems with long-range interactions
Authors: Nicolò Defenu, Alessio Lerose, Silvia Pappalardi,
Abstract summary: Experimental progress in atomic, molecular, and optical platforms has stimulated strong and broad interest in quantum coherent dynamics. This Report presents a systematic and organic review of recent advances in the field.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Experimental progress in atomic, molecular, and optical platforms in the last decade has stimulated strong and broad interest in the quantum coherent dynamics of many long-range interacting particles. The prominent collective character of these systems enables novel non-equilibrium phenomena with no counterpart in conventional quantum systems with local interactions. Much of the theory work in this area either focussed on the impact of variable-range interaction tails on the physics of local interactions or relied on mean-field-like descriptions based on the opposite limit of all-to-all infinite-range interactions. In this Report, we present a systematic and organic review of recent advances in the field. Working with prototypical interacting quantum spin lattices without disorder, our presentation hinges upon a versatile theoretical formalism that interpolates between the few-body mean-field physics and the many-body physics of quasi-local interactions. Such a formalism allows us to connect these two regimes, providing both a formal quantitative tool and basic physical intuition. We leverage this unifying framework to review several findings of the last decade, including the peculiar non-ballistic spreading of quantum correlations, counter-intuitive slowdown of entanglement dynamics, suppression of thermalization and equilibration, anomalous scaling of defects upon traversing criticality, dynamical phase transitions, and genuinely non-equilibrium phases stabilized by periodic driving. The style of this Report is on the pedagogical side, which makes it accessible to readers without previous experience in the subject matter.

Related papers

Recent progress on quantum simulations of non-standard Bose-Hubbard models [0.0]
bosonic atoms confined to optical lattices at ultra-cold temperatures have the potential to unveil novel quantum mechanical effects. We report both theoretical and experimental developments from the last few years. We discuss the real-time evolution of systems with long-range interactions, where sufficiently strong interactions render the dynamics non-ergodic.
arXiv Detail & Related papers (2024-05-13T14:20:58Z)
Dipolar quantum solids emerging in a Hubbard quantum simulator [45.82143101967126]
Long-range and anisotropic interactions promote rich spatial structure in quantum mechanical many-body systems. We show that novel strongly correlated quantum phases can be realized using long-range dipolar interaction in optical lattices. This work opens the door to quantum simulations of a wide range of lattice models with long-range and anisotropic interactions.
arXiv Detail & Related papers (2023-06-01T16:49:20Z)
Reaction-limited quantum reaction-diffusion dynamics [0.0]
We consider the quantum nonequilibrium dynamics of systems where fermionic particles coherently hop on a one-dimensional lattice. By exploiting the time-dependent generalized Gibbs ensemble method, we demonstrate that quantum coherence and destructive interference play a crucial role in these systems.
arXiv Detail & Related papers (2022-09-20T15:14:52Z)
Formation of robust bound states of interacting microwave photons [148.37607455646454]
One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
arXiv Detail & Related papers (2022-06-10T17:52:29Z)
Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
arXiv Detail & Related papers (2022-03-31T13:32:12Z)
Dynamics of a multipartite hybrid quantum system with beamsplitter, dipole-dipole, and Ising interactions [0.0]
We make use of one such hybrid bipartite quantum model, with one subsystem made of a pair of qubits and another comprising a pair of oscillators. Our basic model is the standard double Jaynes-Cummings system, which is known to support both entanglement transfer and entanglement sudden death. We show that compared to the beamsplitter or dipole-dipole interaction, the Ising interaction can have a significant positive impact on entanglement sudden death and birth.
arXiv Detail & Related papers (2021-12-21T21:12:08Z)
Long-range interacting quantum systems [0.0]
We present and identify the common and (mostly) universal features induced by long-range interactions in the behaviour of quantum many-body systems. Cases of competition with other local effects in the above mentioned setups are also reviewed.
arXiv Detail & Related papers (2021-09-02T16:30:36Z)
Interaction-driven breakdown of dynamical localization in a kicked quantum gas [0.0]
Quantum interference can terminate energy growth in a continually kicked system, via a single-particle ergodicity-breaking mechanism known as dynamical localization. We report the experimental realization of a tunably-interacting kicked quantum rotor ensemble using a Bose-Einstein condensate in a pulsed optical lattice. Results quantitatively elucidate the dynamical transition to many-body quantum chaos, advance our understanding of quantum anomalous diffusion, and delimit some possibilities for protecting quantum information in interacting systems.
arXiv Detail & Related papers (2021-06-17T17:52:55Z)
Simulation of Collective Neutrino Oscillations on a Quantum Computer [117.44028458220427]
We present the first simulation of a small system of interacting neutrinos using current generation quantum devices. We introduce a strategy to overcome limitations in the natural connectivity of the qubits and use it to track the evolution of entanglement in real-time.
arXiv Detail & Related papers (2021-02-24T20:51:25Z)
Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
arXiv Detail & Related papers (2020-11-16T08:03:44Z)
Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states. Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
arXiv Detail & Related papers (2020-07-23T19:05:56Z)

This list is automatically generated from the titles and abstracts of the papers in this site.