Geometric quantum discords of interacting qubits in thermal reservoir

Abstract 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 rate...

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Autores principales:	Zhao Li, Xiao-Min Wang, Wu Zhou, Ming-Liang Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/85f6f9e18ebe4b6ca1c3c5dfd5d6e19f
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spelling	oai:doaj.org-article:85f6f9e18ebe4b6ca1c3c5dfd5d6e19f2021-12-02T15:06:22ZGeometric quantum discords of interacting qubits in thermal reservoir10.1038/s41598-017-03535-w2045-2322https://doaj.org/article/85f6f9e18ebe4b6ca1c3c5dfd5d6e19f2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03535-whttps://doaj.org/toc/2045-2322Abstract 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.Zhao LiXiao-Min WangWu ZhouMing-Liang HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhao Li Xiao-Min Wang Wu Zhou Ming-Liang Hu Geometric quantum discords of interacting qubits in thermal reservoir
description	Abstract 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.
format	article
author	Zhao Li Xiao-Min Wang Wu Zhou Ming-Liang Hu
author_facet	Zhao Li Xiao-Min Wang Wu Zhou Ming-Liang Hu
author_sort	Zhao Li
title	Geometric quantum discords of interacting qubits in thermal reservoir
title_short	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_sort	geometric quantum discords of interacting qubits in thermal reservoir
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/85f6f9e18ebe4b6ca1c3c5dfd5d6e19f
work_keys_str_mv	AT zhaoli geometricquantumdiscordsofinteractingqubitsinthermalreservoir AT xiaominwang geometricquantumdiscordsofinteractingqubitsinthermalreservoir AT wuzhou geometricquantumdiscordsofinteractingqubitsinthermalreservoir AT minglianghu geometricquantumdiscordsofinteractingqubitsinthermalreservoir
_version_	1718388459784110080

Geometric quantum discords of interacting qubits in thermal reservoir

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