Efficient two-step entanglement concentration for arbitrary W states

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	Efficient two-step entanglement concentration for arbitrary W states
	Sheng, YB ; Zhou, L ; Zhao, SM
刊名	PHYSICAL REVIEW A
	2012
卷号	85 期号:4
关键词	QUANTUM CRYPTOGRAPHY KERR NONLINEARITY NOISY CHANNELS PURIFICATION COMMUNICATION COMPUTATION SECRET TELEPORTATION DISTILLATION PROTOCOLS
ISSN号	1050-2947
通讯作者	Sheng, YB: Nanjing Univ Posts & Telecommun, Inst Signal Proc Transmiss, Nanjing 210003, Jiangsu, Peoples R China.
中文摘要	We present two two-step practical entanglement concentration protocols for concentrating an arbitrary three-particle less-entangled W state into a maximally entangled W state assisted with single photons. The first protocol uses the linear optics and the second protocol adopts the cross-Kerr nonlinearity to perform the protocol. In the first protocol, based on the postselection principle, three parties say Alice, Bob, and Charlie in different distant locations can obtain the maximally entangled W state from the arbitrary less-entangled W state with a certain success probability. In the second protocol, the parties are not required to possess the sophisticated single-photon detectors and the concentrated photon pair can be retained after performing this protocol successfully. Moreover, the second protocol can be repeated to get a higher success probability. Both protocols may be useful in practical quantum-information applications.
收录类别	SCI
资助信息	National Natural Science Foundation of China [11104159]; Scientific Research Foundation of Nanjing University of Posts and Telecommunications [NY211008]; University Natural Science Research Foundation of JiangSu Province [11KJA510002]; Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education, China; Priority Academic Program Development of Jiangsu Higher Education Institutions
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36872]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Sheng, YB,Zhou, L,Zhao, SM. Efficient two-step entanglement concentration for arbitrary W states[J]. PHYSICAL REVIEW A,2012,85(4).
APA	Sheng, YB,Zhou, L,&Zhao, SM.(2012).Efficient two-step entanglement concentration for arbitrary W states.PHYSICAL REVIEW A,85(4).
MLA	Sheng, YB,et al."Efficient two-step entanglement concentration for arbitrary W states".PHYSICAL REVIEW A 85.4(2012).