Complementarity between decoherence and information retrieval from the environment

• URL: http://arxiv.org/abs/2304.12222v2
• Date: Sun, 24 Mar 2024 21:16:06 GMT
• Title: Complementarity between decoherence and information retrieval from the environment
• Authors: Tae-Hun Lee, Jarosław K. Korbicz,
• Abstract summary: We derive a model-independent, hybrid quantum-trivial solution of open dynamics in the recoil-less limit. We reveal the existence of a new lengthscale, called distinguishability length, different from the well-known thermal de Broglie wavelength that governs the decoherence.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We address the problem of fundamental limitations of information extraction from the environment in open quantum systems. We derive a model-independent, hybrid quantum-classical solution of open dynamics in the recoil-less limit, which includes environmental degrees of freedom. Specifying to the celebrated Caldeira-Leggett model of hot thermal environments, ubiquitous in everyday situations, we reveal the existence of a new lengthscale, called distinguishability length, different from the well-known thermal de Broglie wavelength that governs the decoherence. Interestingly, a new integral kernel, called Quantum Fisher Information kernel, appears in the analysis. It complements the well-known dissipation and noise kernels and satisfies disturbance-information gain type of relations, similar to the famous fluctuation-dissipation relation. Our results complement the existing treatments of the Caldeira-Legget model from a non-standard and highly non-trivial perspective of information dynamics in the environment. This leads to a full picture of how the open evolution looks like from both the system and the environment points of view, as well as sets limits on the precision of indirect observations.

Related papers

• Perturbation theory under the truncated Wigner approximation reveals how system-environment entanglement formation drives quantum decoherence [0.0]
  Quantum decoherence is the disappearance of simple phase relations within a discrete quantum system as a result of interactions with an environment. We introduce a theoretical framework wherein we combine the truncated Wigner approximation with standard time-dependent perturbation theory. We show that the selective suppression of low-frequency environmental modes is particularly effective for mitigating quantum decoherence.
  arXiv  Detail & Related papers  (2022-06-22T18:17:28Z)
• Fast Thermalization from the Eigenstate Thermalization Hypothesis [69.68937033275746]
  Eigenstate Thermalization Hypothesis (ETH) has played a major role in understanding thermodynamic phenomena in closed quantum systems. This paper establishes a rigorous link between ETH and fast thermalization to the global Gibbs state. Our results explain finite-time thermalization in chaotic open quantum systems.
  arXiv  Detail & Related papers  (2021-12-14T18:48:31Z)
• Suppressing information storage in a structured thermal bath: Objectivity and non-Markovianity [0.0]
  Non-Markovian information can be captured by non-Markovian witnesses. We show how such behavior suppresses the classic plateau in Partial Information Plot (PIP) from the paradigm of quantum Darwinism. In addition to the system point of view, we show the impossibility of encoding accessible information for measurement in the environment for any model limit.
  arXiv  Detail & Related papers  (2021-10-07T14:16:00Z)
• Bridging the gap between topological non-Hermitian physics and open quantum systems [62.997667081978825]
  We show how to detect a transition between different topological phases by measuring the response to local perturbations. Our formalism is exemplified in a 1D Hatano-Nelson model, highlighting the difference between the bosonic and fermionic cases.
  arXiv  Detail & Related papers  (2021-09-22T18:00:17Z)
• Entropy Production and the Role of Correlations in Quantum Brownian Motion [77.34726150561087]
  We perform a study on quantum entropy production, different kinds of correlations, and their interplay in the driven Caldeira-Leggett model of quantum Brownian motion.
  arXiv  Detail & Related papers  (2021-08-05T13:11:05Z)
• 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)
• Tracing Information Flow from Open Quantum Systems [52.77024349608834]
  We use photons in a waveguide array to implement a quantum simulation of the coupling of a qubit with a low-dimensional discrete environment. Using the trace distance between quantum states as a measure of information, we analyze different types of information transfer.
  arXiv  Detail & Related papers  (2021-03-22T16:38:31Z)
• Quadratic Models for Engineered Control of Open Quantum Systems [0.0]
  We introduce a framework to model the evolution of a class of open quantum systems whose environments periodically undergo an instantaneous non-unitary evolution stage. We show how this approach can generalise the formalism of repeated interactions to allow for the preservation of system-environment correlations. Its continuous zero-period limit provides a natural description of the evolution of small systems coupled to large environments in negligibly steady states.
  arXiv  Detail & Related papers  (2020-12-07T22:03:31Z)
• Neutrino Decoherence in Simple Open Quantum Systems [4.375669765443605]
  Neutrinos lose coherence as they propagate, which leads to the fading away of oscillations. We model neutrino decoherence induced in open quantum systems from their interaction with the environment.
  arXiv  Detail & Related papers  (2020-09-28T16:52:58Z)
• Sudden death of entanglement induced by a minimal thermal environment [0.0]
  We study the dynamics of two interacting two-level systems having one of them isolated and the other coupled to a single mode electromagnetic field in a thermal state. We find that both sudden death and sudden birth of entanglement may occur in such a simple system.
  arXiv  Detail & Related papers  (2020-07-17T17:55:35Z)
• Einselection from incompatible decoherence channels [62.997667081978825]
  We analyze an open quantum dynamics inspired by CQED experiments with two non-commuting Lindblad operators. We show that Fock states remain the most robust states to decoherence up to a critical coupling.
  arXiv  Detail & Related papers  (2020-01-29T14:15:19Z)

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.