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Geometric quantum discords of interacting qubits in thermal reservoir

We examined decay dynamics of various geometric quantum discords (GQDs) for two interacting qubits described by the Heisenberg XY model and further coupled independently to their respective thermal reservoirs. Compared to the case of noninteracting qubits, our results showed that decay rates of the...

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Detalles Bibliográficos
Autores principales: Li, Zhao, Wang, Xiao-Min, Zhou, Wu, Hu, Ming-Liang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469867/
https://www.ncbi.nlm.nih.gov/pubmed/28611358
http://dx.doi.org/10.1038/s41598-017-03535-w
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author Li, Zhao
Wang, Xiao-Min
Zhou, Wu
Hu, Ming-Liang
author_facet Li, Zhao
Wang, Xiao-Min
Zhou, Wu
Hu, Ming-Liang
author_sort Li, Zhao
collection PubMed
description We examined decay dynamics of various geometric quantum discords (GQDs) for two interacting qubits described by the Heisenberg XY model and further coupled independently to their respective thermal reservoirs. Compared to the case of noninteracting qubits, our results showed that decay rates of the GQDs can be retarded apparently by properly choosing system parameters of the interaction term. In the long-time limit, the asymptotic values of the GQDs are enhanced evidently by tuning anisotropy of the model and strength of the transverse magnetic field. We further illuminated the relations between different GQDs on characterizing quantum correlations, and observed multiple sudden change behaviors of their dynamics.
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spelling pubmed-54698672017-06-19 Geometric quantum discords of interacting qubits in thermal reservoir Li, Zhao Wang, Xiao-Min Zhou, Wu Hu, Ming-Liang Sci Rep Article We examined decay dynamics of various geometric quantum discords (GQDs) for two interacting qubits described by the Heisenberg XY model and further coupled independently to their respective thermal reservoirs. Compared to the case of noninteracting qubits, our results showed that decay rates of the GQDs can be retarded apparently by properly choosing system parameters of the interaction term. In the long-time limit, the asymptotic values of the GQDs are enhanced evidently by tuning anisotropy of the model and strength of the transverse magnetic field. We further illuminated the relations between different GQDs on characterizing quantum correlations, and observed multiple sudden change behaviors of their dynamics. Nature Publishing Group UK 2017-06-13 /pmc/articles/PMC5469867/ /pubmed/28611358 http://dx.doi.org/10.1038/s41598-017-03535-w Text en © The Author(s) 2017 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Li, Zhao
Wang, Xiao-Min
Zhou, Wu
Hu, Ming-Liang
Geometric quantum discords of interacting qubits in thermal reservoir
title Geometric quantum discords of interacting qubits in thermal reservoir
title_full Geometric quantum discords of interacting qubits in thermal reservoir
title_fullStr Geometric quantum discords of interacting qubits in thermal reservoir
title_full_unstemmed Geometric quantum discords of interacting qubits in thermal reservoir
title_short Geometric quantum discords of interacting qubits in thermal reservoir
title_sort geometric quantum discords of interacting qubits in thermal reservoir
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469867/
https://www.ncbi.nlm.nih.gov/pubmed/28611358
http://dx.doi.org/10.1038/s41598-017-03535-w
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