Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary

We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary. The master equation that governs the system evolution is derived. Our r...

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Detalles Bibliográficos
Autores principales: Zhang, Wanhe, Liu, Xiaobao, Yang, Tingli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307635/
https://www.ncbi.nlm.nih.gov/pubmed/35869248
http://dx.doi.org/10.1038/s41598-022-16647-9
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author Zhang, Wanhe
Liu, Xiaobao
Yang, Tingli
author_facet Zhang, Wanhe
Liu, Xiaobao
Yang, Tingli
author_sort Zhang, Wanhe
collection PubMed
description We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary. The master equation that governs the system evolution is derived. Our results show that in the case without a boundary, the vacuum fluctuations and centripetal acceleration will always cause the quantum coherence to decrease. However, with the presence of a boundary, the quantum fluctuations of the scalar field are modified, which makes that quantum coherence could be enhanced as compared to that in the case without a boundary. Particularly, when the atom is very close to the boundary, although the atom still interacts with the environment, it behaves as if it were a closed system and quantum coherence can be shielded from the effect of the vacuum fluctuating scalar field.
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spelling pubmed-93076352022-07-24 Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary Zhang, Wanhe Liu, Xiaobao Yang, Tingli Sci Rep Article We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary. The master equation that governs the system evolution is derived. Our results show that in the case without a boundary, the vacuum fluctuations and centripetal acceleration will always cause the quantum coherence to decrease. However, with the presence of a boundary, the quantum fluctuations of the scalar field are modified, which makes that quantum coherence could be enhanced as compared to that in the case without a boundary. Particularly, when the atom is very close to the boundary, although the atom still interacts with the environment, it behaves as if it were a closed system and quantum coherence can be shielded from the effect of the vacuum fluctuating scalar field. Nature Publishing Group UK 2022-07-22 /pmc/articles/PMC9307635/ /pubmed/35869248 http://dx.doi.org/10.1038/s41598-022-16647-9 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhang, Wanhe
Liu, Xiaobao
Yang, Tingli
Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title_full Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title_fullStr Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title_full_unstemmed Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title_short Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
title_sort quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307635/
https://www.ncbi.nlm.nih.gov/pubmed/35869248
http://dx.doi.org/10.1038/s41598-022-16647-9
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AT liuxiaobao quantumcoherenceofacircularlyacceleratedatominaspacetimewithareflectingboundary
AT yangtingli quantumcoherenceofacircularlyacceleratedatominaspacetimewithareflectingboundary

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