Heat transfer and entanglement -- non-equilibrium correlation spectra of two quantum oscillators

• URL: http://arxiv.org/abs/2102.13559v1
• Date: Fri, 26 Feb 2021 16:00:43 GMT
• Title: Heat transfer and entanglement -- non-equilibrium correlation spectra of two quantum oscillators
• Authors: Carsten Henkel
• Abstract summary: The validity of the fluctuation-dissipation theorem is established for global equilibrium in the stationary state. No rotating-wave approximation is applied, and anomalous heat transport from cold to hot bath, as reported in earlier work, is demonstrated not to occur.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: The non-equilibrium state of two oscillators with a mutual interaction and coupled to separate heat baths is discussed. Bosonic baths are considered, and an exact spectral representation for the elements of the covariance matrix is provided analytically. A wide class of spectral densities for the relevant bath modes is allowed for. The validity of the fluctuation-dissipation theorem is established for global equilibrium (both baths at the same temperature) in the stationary state. Spectral measures of entanglement are suggested by comparing to the equilibrium spectrum of zero-point fluctuations. No rotating-wave approximation is applied, and anomalous heat transport from cold to hot bath, as reported in earlier work, is demonstrated not to occur.

Related papers

• Extensive Long-Range Entanglement at Finite Temperatures from a Nonequilibrium Bias [0.0]
  We study the entanglement properties of free fermions on a one-dimensional lattice that contains a generic charge- and energy-conserving noninteracting impurity. We show that all these measures scale linearly with the overlap between one subsystem and the mirror image of the other. While a simple proportionality relation between the negativity and R'enyi versions of the mutual information is observed to hold at zero temperature, it breaks down at finite temperatures.
  arXiv  Detail & Related papers  (2024-04-16T18:00:16Z)
• Nonequilibrium quantum heat transport between structured environments [0.0]
  We apply the hierarchical equations of motion technique to analyze nonequilibrium heat transport in a spin-boson type model. We find the heat current to be drastically modified at weak system-bath coupling. Our analysis highlights a novel mechanism for controlling heat transport in nanoscale systems.
  arXiv  Detail & Related papers  (2024-03-20T18:20:12Z)
• Dissipative preparation of a Floquet topological insulator in an optical lattice via bath engineering [44.99833362998488]
  Floquet engineering is an important tool for realizing charge-neutral atoms in optical lattices. We show that a driven-dissipative system approximates a topological insulator.
  arXiv  Detail & Related papers  (2023-07-07T17:47:50Z)
• Thermal equilibrium in Gaussian dynamical semigroups [77.34726150561087]
  We characterize all Gaussian dynamical semigroups in continuous variables quantum systems of n-bosonic modes which have a thermal Gibbs state as a stationary solution. We also show that Alicki's quantum detailed-balance condition, based on a Gelfand-Naimark-Segal inner product, allows the determination of the temperature dependence of the diffusion and dissipation matrices.
  arXiv  Detail & Related papers  (2022-07-11T19:32:17Z)
• Nonequilibrium fluctuations in boson transport through squeezed reservoirs [0.0]
  We explore the effects of quantum mechanical squeezing on the nonequilibrium fluctuations of bosonic transport between two squeezed harmonic reservoirs. We derive a nonzero thermodynamic affinity under equal temperature setting of the two squeezed reservoirs.
  arXiv  Detail & Related papers  (2022-06-15T15:37:02Z)
• In-Gap Band Formation in a Periodically Driven Charge Density Wave Insulator [68.8204255655161]
  Periodically driven quantum many-body systems host unconventional behavior not realized at equilibrium. We investigate such a setup for strongly interacting spinless fermions on a chain, which at zero temperature and strong interactions form a charge density wave insulator.
  arXiv  Detail & Related papers  (2022-05-19T13:28:47Z)
• Floquet-heating-induced Bose condensation in a scar-like mode of an open driven optical-lattice system [62.997667081978825]
  We show that the interplay of bath-induced dissipation and controlled Floquet heating can give rise to non-equilibrium Bose condensation. Our predictions are based on a microscopic model that is solved using kinetic equations of motion derived from Floquet-Born-Markov theory.
  arXiv  Detail & Related papers  (2022-04-14T17:56:03Z)
• Exact thermal properties of free-fermionic spin chains [68.8204255655161]
  We focus on spin chain models that admit a description in terms of free fermions. Errors stemming from the ubiquitous approximation are identified in the neighborhood of the critical point at low temperatures.
  arXiv  Detail & Related papers  (2021-03-30T13:15:44Z)
• Anyon Quantum Transport and Noise away from Equilibrium [0.0]
  We investigate the quantum transport of anyons in one space dimension. A non-equilibrium representation of the physical observables is constructed. The dependence of the relative noise power on the statistical parameter is established.
  arXiv  Detail & Related papers  (2020-05-27T12:33:09Z)
• Discrimination of thermal baths by single qubit probes [1.3048920509133808]
  Non-equilibrium states of quantum systems in contact with thermal baths help telling environments with different temperatures or different statistics apart. We extend these studies to a more generic problem that consists of discriminating between two baths with disparate constituents at unequal temperatures.
  arXiv  Detail & Related papers  (2020-05-06T13:43:40Z)
• Out-of-equilibrium quantum thermodynamics in the Bloch sphere: temperature and internal entropy production [68.8204255655161]
  An explicit expression for the temperature of an open two-level quantum system is obtained. This temperature coincides with the environment temperature if the system reaches thermal equilibrium with a heat reservoir. We show that within this theoretical framework the total entropy production can be partitioned into two contributions.
  arXiv  Detail & Related papers  (2020-04-09T23:06:43Z)

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.