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Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel

Nonlocal quantum correlations, such as quantum entanglement, quantum steering, and Bell nonlocality, are crucial resources for quantum information tasks. How to protect these quantum resources from decoherence is one of the most urgent problems to be solved. Here, we investigate the evolution of the...

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Autores principales: Wang, Shuo, Han, Xin-Hong, Li, Wei-Chen, Qian, Tian, Fan, Xuan, Xiao, Ya, Gu, Yong-Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9705301/
https://www.ncbi.nlm.nih.gov/pubmed/36443637
http://dx.doi.org/10.1038/s41598-022-24789-z
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author Wang, Shuo
Han, Xin-Hong
Li, Wei-Chen
Qian, Tian
Fan, Xuan
Xiao, Ya
Gu, Yong-Jian
author_facet Wang, Shuo
Han, Xin-Hong
Li, Wei-Chen
Qian, Tian
Fan, Xuan
Xiao, Ya
Gu, Yong-Jian
author_sort Wang, Shuo
collection PubMed
description Nonlocal quantum correlations, such as quantum entanglement, quantum steering, and Bell nonlocality, are crucial resources for quantum information tasks. How to protect these quantum resources from decoherence is one of the most urgent problems to be solved. Here, we investigate the evolution of these correlations in the correlated squeezed generalized amplitude damping (SGAD) channel and propose a scheme to protect them with weak measurement (WM) and quantum measurement reversal (QMR). Compared with the results of the uncorrelated SGAD channel, we find that when [Formula: see text] , correlation and squeezing effects can prolong the survival time of quantum entanglement, Bell nonlocality, and quantum steering by about 152 times, 207 times, and 10 times, respectively. In addition, local WM and QMR can effectively recover the disappeared nonlocal quantum correlations either in uncorrelated or completely correlated SGAD channels. Moreover, we find that these initial nonlocal quantum correlations could be drastically amplified under the correlated channel. And the steering direction can be flexibly manipulated either by changing the channel parameters or the strength of WM and QMR. These results not only make a step forward in suppressing decoherence and enhancing quantum correlation in noise channels, but also help to develop relevant practical applications.
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spelling pubmed-97053012022-11-30 Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel Wang, Shuo Han, Xin-Hong Li, Wei-Chen Qian, Tian Fan, Xuan Xiao, Ya Gu, Yong-Jian Sci Rep Article Nonlocal quantum correlations, such as quantum entanglement, quantum steering, and Bell nonlocality, are crucial resources for quantum information tasks. How to protect these quantum resources from decoherence is one of the most urgent problems to be solved. Here, we investigate the evolution of these correlations in the correlated squeezed generalized amplitude damping (SGAD) channel and propose a scheme to protect them with weak measurement (WM) and quantum measurement reversal (QMR). Compared with the results of the uncorrelated SGAD channel, we find that when [Formula: see text] , correlation and squeezing effects can prolong the survival time of quantum entanglement, Bell nonlocality, and quantum steering by about 152 times, 207 times, and 10 times, respectively. In addition, local WM and QMR can effectively recover the disappeared nonlocal quantum correlations either in uncorrelated or completely correlated SGAD channels. Moreover, we find that these initial nonlocal quantum correlations could be drastically amplified under the correlated channel. And the steering direction can be flexibly manipulated either by changing the channel parameters or the strength of WM and QMR. These results not only make a step forward in suppressing decoherence and enhancing quantum correlation in noise channels, but also help to develop relevant practical applications. Nature Publishing Group UK 2022-11-28 /pmc/articles/PMC9705301/ /pubmed/36443637 http://dx.doi.org/10.1038/s41598-022-24789-z 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
Wang, Shuo
Han, Xin-Hong
Li, Wei-Chen
Qian, Tian
Fan, Xuan
Xiao, Ya
Gu, Yong-Jian
Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title_full Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title_fullStr Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title_full_unstemmed Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title_short Protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
title_sort protecting nonlocal quantum correlations in correlated squeezed generalized amplitude damping channel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9705301/
https://www.ncbi.nlm.nih.gov/pubmed/36443637
http://dx.doi.org/10.1038/s41598-022-24789-z
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