Entanglement concentration for arbitrary four-particle linear cluster states

Abstract Cluster states, whose model are a remarkably rich structure in measurement-based quantum computation, hold high degree of entanglement, while entanglement is very fragile during the process of transmission because of the inevitable interaction with the environment. We propose two entangleme...

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Autores principales:	Ting-Ting Song, Xiaoqing Tan, Tianyin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f8b44a733d464e44ad753066b333d479
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spelling	oai:doaj.org-article:f8b44a733d464e44ad753066b333d4792021-12-02T16:08:08ZEntanglement concentration for arbitrary four-particle linear cluster states10.1038/s41598-017-02146-92045-2322https://doaj.org/article/f8b44a733d464e44ad753066b333d4792017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02146-9https://doaj.org/toc/2045-2322Abstract Cluster states, whose model are a remarkably rich structure in measurement-based quantum computation, hold high degree of entanglement, while entanglement is very fragile during the process of transmission because of the inevitable interaction with the environment. We propose two entanglement concentration protocols for four-particle linear cluster states which and are susceptible to the decoherence and the imperfect communication setups. In the first protocol, POVM operators are introduced to maximize the success probability, and the second protocol is based on cross-Kerr nonlinearity which is utilized to check the parity between the original particle and the ancillary particle. Both of the protocols have their own advantages. The first one can be easily realized in experiment by linear optics, while the one with cross-Kerr nonlinearity reach more than 90% success probability by iteration. Since the wide application of cluster states, the two protocols are efficient and valuable to different fields of quantum communication.Ting-Ting SongXiaoqing TanTianyin WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ting-Ting Song Xiaoqing Tan Tianyin Wang Entanglement concentration for arbitrary four-particle linear cluster states
description	Abstract Cluster states, whose model are a remarkably rich structure in measurement-based quantum computation, hold high degree of entanglement, while entanglement is very fragile during the process of transmission because of the inevitable interaction with the environment. We propose two entanglement concentration protocols for four-particle linear cluster states which and are susceptible to the decoherence and the imperfect communication setups. In the first protocol, POVM operators are introduced to maximize the success probability, and the second protocol is based on cross-Kerr nonlinearity which is utilized to check the parity between the original particle and the ancillary particle. Both of the protocols have their own advantages. The first one can be easily realized in experiment by linear optics, while the one with cross-Kerr nonlinearity reach more than 90% success probability by iteration. Since the wide application of cluster states, the two protocols are efficient and valuable to different fields of quantum communication.
format	article
author	Ting-Ting Song Xiaoqing Tan Tianyin Wang
author_facet	Ting-Ting Song Xiaoqing Tan Tianyin Wang
author_sort	Ting-Ting Song
title	Entanglement concentration for arbitrary four-particle linear cluster states
title_short	Entanglement concentration for arbitrary four-particle linear cluster states
title_full	Entanglement concentration for arbitrary four-particle linear cluster states
title_fullStr	Entanglement concentration for arbitrary four-particle linear cluster states
title_full_unstemmed	Entanglement concentration for arbitrary four-particle linear cluster states
title_sort	entanglement concentration for arbitrary four-particle linear cluster states
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f8b44a733d464e44ad753066b333d479
work_keys_str_mv	AT tingtingsong entanglementconcentrationforarbitraryfourparticlelinearclusterstates AT xiaoqingtan entanglementconcentrationforarbitraryfourparticlelinearclusterstates AT tianyinwang entanglementconcentrationforarbitraryfourparticlelinearclusterstates
_version_	1718384632830885888

Entanglement concentration for arbitrary four-particle linear cluster states

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