Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity

Abstract We present an efficient hyperentanglement concentration protocol (hyper-ECP) for two-photon six-qubit systems in nonlocal partially hyperentangled Bell states with unknown parameters. In our scheme, we use two identical partially hyperentangled states which are simultaneously entangled in p...

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Autores principales:	Qian Liu, Guo-Zhu Song, Tian-Hui Qiu, Xiao-Min Zhang, Hong-Yang Ma, Mei Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c3b8b819adeb4eb68c27cd9631f1fcef
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spelling	oai:doaj.org-article:c3b8b819adeb4eb68c27cd9631f1fcef2021-12-02T16:18:02ZHyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity10.1038/s41598-020-78529-22045-2322https://doaj.org/article/c3b8b819adeb4eb68c27cd9631f1fcef2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78529-2https://doaj.org/toc/2045-2322Abstract We present an efficient hyperentanglement concentration protocol (hyper-ECP) for two-photon six-qubit systems in nonlocal partially hyperentangled Bell states with unknown parameters. In our scheme, we use two identical partially hyperentangled states which are simultaneously entangled in polarization and two different longitudinal momentum degrees of freedom (DOFs) to distill the maximally hyperentangled Bell state. The quantum nondemolition detectors based on the cross-Kerr nonlinearity are used to realize the parity checks of two-photon systems in three DOFs. The hyper-ECP can extract all the useful entanglement source, and the success probability can reach the theory limit with the help of iteration. All these advantages make our hyper-ECP useful in long-distance quantum communication in the future.Qian LiuGuo-Zhu SongTian-Hui QiuXiao-Min ZhangHong-Yang MaMei ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qian Liu Guo-Zhu Song Tian-Hui Qiu Xiao-Min Zhang Hong-Yang Ma Mei Zhang Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
description	Abstract We present an efficient hyperentanglement concentration protocol (hyper-ECP) for two-photon six-qubit systems in nonlocal partially hyperentangled Bell states with unknown parameters. In our scheme, we use two identical partially hyperentangled states which are simultaneously entangled in polarization and two different longitudinal momentum degrees of freedom (DOFs) to distill the maximally hyperentangled Bell state. The quantum nondemolition detectors based on the cross-Kerr nonlinearity are used to realize the parity checks of two-photon systems in three DOFs. The hyper-ECP can extract all the useful entanglement source, and the success probability can reach the theory limit with the help of iteration. All these advantages make our hyper-ECP useful in long-distance quantum communication in the future.
format	article
author	Qian Liu Guo-Zhu Song Tian-Hui Qiu Xiao-Min Zhang Hong-Yang Ma Mei Zhang
author_facet	Qian Liu Guo-Zhu Song Tian-Hui Qiu Xiao-Min Zhang Hong-Yang Ma Mei Zhang
author_sort	Qian Liu
title	Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
title_short	Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
title_full	Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
title_fullStr	Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
title_full_unstemmed	Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity
title_sort	hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-kerr nonlinearity
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/c3b8b819adeb4eb68c27cd9631f1fcef
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_version_	1718384254397710336

Hyperentanglement concentration of nonlocal two-photon six-qubit systems via the cross-Kerr nonlinearity

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