Scheme for entanglement concentration of unknown W class states via linear optics

doi:10.1088/1009-1963/16/3/014

中国物理B ›› 2007, Vol. 16 ›› Issue (3): 640-643.doi: 10.1088/1009-1963/16/3/014

Scheme for entanglement concentration of unknown W class states via linear optics

曹卓良¹, 董萍¹, 章礼华²

(1)School of Physics & Material Science, Anhui University, Hefei 230039, China; (2)School of Physics & Material Science, Anhui University, Hefei 230039, China;Department of Physics, Anqing Teachers College, Anqing 246011, China

收稿日期:2006-06-23 修回日期:2006-07-09 出版日期:2007-03-20 发布日期:2007-03-20
基金资助:
Project supported by the Natural Science Foundation of the Education Department of Anhui Province, China (Grant No~2006kj070A) and Anhui Provincial Natural Science Foundation, China (Grant No~03042401) and the Talent Foundation of Anhui University, China.

Scheme for entanglement concentration of unknown W class states via linear optics

Zhang Li-Hua(章礼华)^a)b)†, Dong Ping(董萍)^a), and Cao Zhuo-Liang(曹卓良)^a)‡

^a School of Physics & Material Science, Anhui University, Hefei 230039, China; ^b Department of Physics, Anqing Teachers College, Anqing 246011, China

Received:2006-06-23 Revised:2006-07-09 Online:2007-03-20 Published:2007-03-20
Supported by:
Project supported by the Natural Science Foundation of the Education Department of Anhui Province, China (Grant No~2006kj070A) and Anhui Provincial Natural Science Foundation, China (Grant No~03042401) and the Talent Foundation of Anhui University, China.

摘要/Abstract

摘要： This paper proposes a scheme for entanglement concentration of unknown triparticle $W$ class states with a certain probability. This protocol is mainly based on the coincidences of single-photon detectors and requires single-photon detectors and linear optical elements. The scheme is feasible within current technology.

关键词: entanglement concentration, W state, linear optical elements

Abstract: This paper proposes a scheme for entanglement concentration of unknown triparticle $W$ class states with a certain probability. This protocol is mainly based on the coincidences of single-photon detectors and requires single-photon detectors and linear optical elements. The scheme is feasible within current technology.

Key words: entanglement concentration, W state, linear optical elements

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.79.Fm (Reflectors, beam splitters, and deflectors)

章礼华, 曹卓良, 董萍. Scheme for entanglement concentration of unknown W class states via linear optics[J]. 中国物理B, 2007, 16(3): 640-643.

Zhang Li-Hua(章礼华), Dong Ping(董萍), and Cao Zhuo-Liang(曹卓良). Scheme for entanglement concentration of unknown W class states via linear optics[J]. Chinese Physics, 2007, 16(3): 640-643.

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Scheme for entanglement concentration of unknown W class states via linear optics

Scheme for entanglement concentration of unknown W class states via linear optics

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