Symmetry in the open-system dynamics of quantum correlations

Abstract We study the symmetry properties in the dynamics of quantum correlations for two-qubit systems in one-sided noisy channels, with respect to a switch in the location of noise from one qubit to the other. We consider four different channel types, namely depolarizing, amplitude damping, bit-fl...

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Autores principales:	Henri Lyyra, Göktuğ Karpat, Chuan-Feng Li, Guang-Can Guo, Jyrki Piilo, Sabrina Maniscalco
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e9ec1b723a3d472884316cfd8aadf953
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spelling	oai:doaj.org-article:e9ec1b723a3d472884316cfd8aadf9532021-12-02T16:06:41ZSymmetry in the open-system dynamics of quantum correlations10.1038/s41598-017-08457-12045-2322https://doaj.org/article/e9ec1b723a3d472884316cfd8aadf9532017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08457-1https://doaj.org/toc/2045-2322Abstract We study the symmetry properties in the dynamics of quantum correlations for two-qubit systems in one-sided noisy channels, with respect to a switch in the location of noise from one qubit to the other. We consider four different channel types, namely depolarizing, amplitude damping, bit-flip, and bit-phase-flip channel, and identify the classes of initial states leading to symmetric decay of entanglement, non-locality and discord. Our results show that the symmetric decay of quantum correlations is not directly linked to the presence or absence of symmetry in the initial state, while it does depend on the type of correlation considered as well as on the type of noise. We prove that asymmetric decay can be used to infer, in certain cases, characteristic properties of the channel. We also show that the location of noise may lead to dramatic changes in the persistence of phenomena such as entanglement sudden death and time-invariant discord.Henri LyyraGöktuğ KarpatChuan-Feng LiGuang-Can GuoJyrki PiiloSabrina ManiscalcoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Henri Lyyra Göktuğ Karpat Chuan-Feng Li Guang-Can Guo Jyrki Piilo Sabrina Maniscalco Symmetry in the open-system dynamics of quantum correlations
description	Abstract We study the symmetry properties in the dynamics of quantum correlations for two-qubit systems in one-sided noisy channels, with respect to a switch in the location of noise from one qubit to the other. We consider four different channel types, namely depolarizing, amplitude damping, bit-flip, and bit-phase-flip channel, and identify the classes of initial states leading to symmetric decay of entanglement, non-locality and discord. Our results show that the symmetric decay of quantum correlations is not directly linked to the presence or absence of symmetry in the initial state, while it does depend on the type of correlation considered as well as on the type of noise. We prove that asymmetric decay can be used to infer, in certain cases, characteristic properties of the channel. We also show that the location of noise may lead to dramatic changes in the persistence of phenomena such as entanglement sudden death and time-invariant discord.
format	article
author	Henri Lyyra Göktuğ Karpat Chuan-Feng Li Guang-Can Guo Jyrki Piilo Sabrina Maniscalco
author_facet	Henri Lyyra Göktuğ Karpat Chuan-Feng Li Guang-Can Guo Jyrki Piilo Sabrina Maniscalco
author_sort	Henri Lyyra
title	Symmetry in the open-system dynamics of quantum correlations
title_short	Symmetry in the open-system dynamics of quantum correlations
title_full	Symmetry in the open-system dynamics of quantum correlations
title_fullStr	Symmetry in the open-system dynamics of quantum correlations
title_full_unstemmed	Symmetry in the open-system dynamics of quantum correlations
title_sort	symmetry in the open-system dynamics of quantum correlations
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e9ec1b723a3d472884316cfd8aadf953
work_keys_str_mv	AT henrilyyra symmetryintheopensystemdynamicsofquantumcorrelations AT goktugkarpat symmetryintheopensystemdynamicsofquantumcorrelations AT chuanfengli symmetryintheopensystemdynamicsofquantumcorrelations AT guangcanguo symmetryintheopensystemdynamicsofquantumcorrelations AT jyrkipiilo symmetryintheopensystemdynamicsofquantumcorrelations AT sabrinamaniscalco symmetryintheopensystemdynamicsofquantumcorrelations
_version_	1718384938677436416

Symmetry in the open-system dynamics of quantum correlations

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