Cargando…

Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches

Quantum memory effects can be qualitatively understood as a consequence of an environment-to-system backflow of information. Here, we analyze and compare how this concept is interpreted and implemented in different approaches to quantum non-Markovianity. We study a nonoperational approach, defined b...

Descripción completa

Detalles Bibliográficos
Autor principal: Budini, Adrián A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9140462/
https://www.ncbi.nlm.nih.gov/pubmed/35626534
http://dx.doi.org/10.3390/e24050649
_version_ 1784715102624153600
author Budini, Adrián A.
author_facet Budini, Adrián A.
author_sort Budini, Adrián A.
collection PubMed
description Quantum memory effects can be qualitatively understood as a consequence of an environment-to-system backflow of information. Here, we analyze and compare how this concept is interpreted and implemented in different approaches to quantum non-Markovianity. We study a nonoperational approach, defined by the distinguishability between two system states characterized by different initial conditions, and an operational approach, which is defined by the correlation between different outcomes associated to successive measurement processes performed over the system of interest. The differences, limitations, and vantages of each approach are characterized in detail by considering diverse system–environment models and dynamics. As a specific example, we study a non-Markovian depolarizing map induced by the interaction of the system of interest with an environment characterized by incoherent and coherent self-dynamics.
format Online
Article
Text
id pubmed-9140462
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-91404622022-05-28 Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches Budini, Adrián A. Entropy (Basel) Article Quantum memory effects can be qualitatively understood as a consequence of an environment-to-system backflow of information. Here, we analyze and compare how this concept is interpreted and implemented in different approaches to quantum non-Markovianity. We study a nonoperational approach, defined by the distinguishability between two system states characterized by different initial conditions, and an operational approach, which is defined by the correlation between different outcomes associated to successive measurement processes performed over the system of interest. The differences, limitations, and vantages of each approach are characterized in detail by considering diverse system–environment models and dynamics. As a specific example, we study a non-Markovian depolarizing map induced by the interaction of the system of interest with an environment characterized by incoherent and coherent self-dynamics. MDPI 2022-05-05 /pmc/articles/PMC9140462/ /pubmed/35626534 http://dx.doi.org/10.3390/e24050649 Text en © 2022 by the author. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Budini, Adrián A.
Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title_full Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title_fullStr Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title_full_unstemmed Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title_short Quantum Non-Markovian Environment-to-System Backflows of Information: Nonoperational vs. Operational Approaches
title_sort quantum non-markovian environment-to-system backflows of information: nonoperational vs. operational approaches
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9140462/
https://www.ncbi.nlm.nih.gov/pubmed/35626534
http://dx.doi.org/10.3390/e24050649
work_keys_str_mv AT budiniadriana quantumnonmarkovianenvironmenttosystembackflowsofinformationnonoperationalvsoperationalapproaches