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Disentanglement Dynamics in Nonequilibrium Environments
We theoretically study the non-Markovian disentanglement dynamics of a two-qubit system coupled to nonequilibrium environments with nonstationary and non-Markovian random telegraph noise statistical properties. The reduced density matrix of the two-qubit system can be expressed as the Kraus represen...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9601490/ https://www.ncbi.nlm.nih.gov/pubmed/37420350 http://dx.doi.org/10.3390/e24101330 |
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author | Chen, Mingli Chen, Haonan Han, Tao Cai, Xiangji |
author_facet | Chen, Mingli Chen, Haonan Han, Tao Cai, Xiangji |
author_sort | Chen, Mingli |
collection | PubMed |
description | We theoretically study the non-Markovian disentanglement dynamics of a two-qubit system coupled to nonequilibrium environments with nonstationary and non-Markovian random telegraph noise statistical properties. The reduced density matrix of the two-qubit system can be expressed as the Kraus representation in terms of the tensor products of the single qubit Kraus operators. We derive the relation between the entanglement and nonlocality of the two-qubit system which are both closely associated with the decoherence function. We identify the threshold values of the decoherence function to ensure the existences of the concurrence and nonlocal quantum correlations for an arbitrary evolution time when the two-qubit system is initially prepared in the composite Bell states and the Werner states, respectively. It is shown that the environmental nonequilibrium feature can suppress the disentanglement dynamics and reduce the entanglement revivals in non-Markovian dynamics regime. In addition, the environmental nonequilibrium feature can enhance the nonlocality of the two-qubit system. Moreover, the entanglement sudden death and rebirth phenomena and the transition between quantum and classical nonlocalities closely depend on the parameters of the initial states and the environmental parameters in nonequilibrium environments. |
format | Online Article Text |
id | pubmed-9601490 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96014902022-10-27 Disentanglement Dynamics in Nonequilibrium Environments Chen, Mingli Chen, Haonan Han, Tao Cai, Xiangji Entropy (Basel) Article We theoretically study the non-Markovian disentanglement dynamics of a two-qubit system coupled to nonequilibrium environments with nonstationary and non-Markovian random telegraph noise statistical properties. The reduced density matrix of the two-qubit system can be expressed as the Kraus representation in terms of the tensor products of the single qubit Kraus operators. We derive the relation between the entanglement and nonlocality of the two-qubit system which are both closely associated with the decoherence function. We identify the threshold values of the decoherence function to ensure the existences of the concurrence and nonlocal quantum correlations for an arbitrary evolution time when the two-qubit system is initially prepared in the composite Bell states and the Werner states, respectively. It is shown that the environmental nonequilibrium feature can suppress the disentanglement dynamics and reduce the entanglement revivals in non-Markovian dynamics regime. In addition, the environmental nonequilibrium feature can enhance the nonlocality of the two-qubit system. Moreover, the entanglement sudden death and rebirth phenomena and the transition between quantum and classical nonlocalities closely depend on the parameters of the initial states and the environmental parameters in nonequilibrium environments. MDPI 2022-09-21 /pmc/articles/PMC9601490/ /pubmed/37420350 http://dx.doi.org/10.3390/e24101330 Text en © 2022 by the authors. 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 Chen, Mingli Chen, Haonan Han, Tao Cai, Xiangji Disentanglement Dynamics in Nonequilibrium Environments |
title | Disentanglement Dynamics in Nonequilibrium Environments |
title_full | Disentanglement Dynamics in Nonequilibrium Environments |
title_fullStr | Disentanglement Dynamics in Nonequilibrium Environments |
title_full_unstemmed | Disentanglement Dynamics in Nonequilibrium Environments |
title_short | Disentanglement Dynamics in Nonequilibrium Environments |
title_sort | disentanglement dynamics in nonequilibrium environments |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9601490/ https://www.ncbi.nlm.nih.gov/pubmed/37420350 http://dx.doi.org/10.3390/e24101330 |
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