Entanglement propagation and dynamics in non-additive quantum systems
- URL: http://arxiv.org/abs/2112.11488v3
- Date: Fri, 4 Aug 2023 13:35:41 GMT
- Title: Entanglement propagation and dynamics in non-additive quantum systems
- Authors: Guido Giachetti and Nicolo Defenu
- Abstract summary: Long-range interacting quantum systems are promising candidates for quantum technological applications.
We describe the dynamics of the entanglement entropy in many diverging-body quantum systems.
Quantitative predictions on the shape and timescales of entanglement propagation are made.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The prominent collective character of long-range interacting quantum systems
makes them promising candidates for quantum technological applications. Yet,
lack of additivity overthrows the traditional picture for entanglement scaling
and transport, due to the breakdown of the common mechanism based on
excitations propagation and confinement. Here, we describe the dynamics of the
entanglement entropy in many-body quantum systems with a diverging contribution
of the long-range two body potential to the internal energy. While in the
strict thermodynamic limit entanglement dynamics is shown to be suppressed, a
rich mosaic of novel scaling regimes is observed at intermediate system sizes,
due to the possibility to trigger multiple resonant modes in the global
dynamics. Quantitative predictions on the shape and timescales of entanglement
propagation are made, paving the way to the observation of these phases in
current quantum simulators. This picture is connected and contrasted with the
case of local many body systems subject to Floquet driving.
Related papers
- Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide.
When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits.
We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
arXiv Detail & Related papers (2024-08-30T15:54:33Z) - Coarse-grained dynamics in quantum many-body systems using the maximum entropy principle [0.46873264197900916]
We construct an inverse map that assigns a microscopic state to a coarse-grained state based on the maximum entropy principle.
We investigate two-qubit systems, with swap and controlled-not gates, and $n$-qubit systems, configured either in an Ising spin chain or with all-to-all interactions.
We find that these dynamics exhibit atypical quantum behavior, such as non-linearity and non-Markovianity.
arXiv Detail & Related papers (2024-07-16T17:11:14Z) - Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution.
We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions.
We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
arXiv Detail & Related papers (2024-05-27T17:40:39Z) - Universality of Bose-Einstein Condensation and Quenched Formation
Dynamics [0.0]
The emergence of macroscopic coherence in a many-body quantum system is a ubiquitous phenomenon across different physical systems and scales.
Characteristic examples include symmetry-breaking in the Kibble-Zurek mechanism, coarsening and phase-ordering kinetics, and universaltemporal scaling around non-thermal fixed points.
The Chapter concludes with a brief review of the potential relevance of some of these concepts in modelling the large-scale distribution of dark matter in the universe.
arXiv Detail & Related papers (2023-04-19T10:12:52Z) - Open quantum dynamics of strongly coupled oscillators with
multi-configuration time-dependent Hartree propagation and Markovian quantum
jumps [0.0]
We implement a quantum state trajectory scheme for solving Lindblad quantum master equations.
We show the potential for solving the dissipative dynamics of finite size arrays of strongly interacting quantized oscillators with high excitation densities.
arXiv Detail & Related papers (2022-08-02T03:01:14Z) - From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation.
We describe quantum decays in a 2-level system as coherent and continuous processes.
arXiv Detail & Related papers (2021-07-29T18:27:38Z) - Dissipative quasi-particle picture for quadratic Markovian open quantum
systems [0.0]
Correlations between different regions of a quantum many-body system can be quantified.
For closed systems, analytical and numerical tools can accurately capture the time-evolution of subsystem entropies.
Here, we make progress by formulating a dissipative quasi-particle picture for a general class of noninteracting open quantum systems.
arXiv Detail & Related papers (2021-06-22T18:10:47Z) - Enhancement of quantum correlations and geometric phase for a driven
bipartite quantum system in a structured environment [77.34726150561087]
We study the role of driving in an initial maximally entangled state evolving under a structured environment.
This knowledge can aid the search for physical setups that best retain quantum properties under dissipative dynamics.
arXiv Detail & Related papers (2021-03-18T21:11:37Z) - Stark many-body localization on a superconducting quantum processor [10.67740744008533]
We build a quantum device composed of thirty-two superconducting qubits, faithfully reproducing the relaxation dynamics of a non-integrable spin model.
Our results describe the real-time evolution at sizes that surpass what is currently attainable by exact simulations in classical computers.
arXiv Detail & Related papers (2020-11-27T18:37:01Z) - 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) - Unraveling the topology of dissipative quantum systems [58.720142291102135]
We discuss topology in dissipative quantum systems from the perspective of quantum trajectories.
We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
arXiv Detail & Related papers (2020-07-12T11:26:02Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.