Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system

doi:10.1088/1674-1056/21/11/110305

中国物理B ›› 2012, Vol. 21 ›› Issue (11): 110305-110305.doi: 10.1088/1674-1056/21/11/110305

Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system

曹聪, 王川, 张茹

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2012-05-03 修回日期:2012-05-14 出版日期:2012-10-01 发布日期:2012-10-01
基金资助:
Project supported by the National Fundamental Research Program of China (Grant No. 2010CB923202), the Specialized Research Fund for the Doctoral Program of Education Ministry of China (Grant No. 20090005120008), the Fundamental Research Funds for the Central Universities of China, and the National Natural Science Foundation of China (Grant Nos. 60937003, 61178010, and 61205117).

Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system

Cao Cong (曹聪), Wang Chuan (王川), Zhang Ru (张茹 )

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2012-05-03 Revised:2012-05-14 Online:2012-10-01 Published:2012-10-01
Contact: Wang Chuan E-mail:wangchuan82@gmail.com
Supported by:
Project supported by the National Fundamental Research Program of China (Grant No. 2010CB923202), the Specialized Research Fund for the Doctoral Program of Education Ministry of China (Grant No. 20090005120008), the Fundamental Research Funds for the Central Universities of China, and the National Natural Science Foundation of China (Grant Nos. 60937003, 61178010, and 61205117).

摘要/Abstract

摘要： We propose a practical entanglement concentration protocol (ECP) for a hybrid entangled state using quantum dots and microcavity coupled system. A hybrid less-entangled state can be concentrated to a most-entangled state with a certain probability using only one ancillary single photon. Moreover, using this protocol, we can also concentrate arbitrary three-particle less-entangled W state using two ancillary photons and classical communication. The proposed protocols provide us with a useful method to concentrate less-entangled states, which can be implemented with current technology.

关键词: entanglement concentration, quantum dot, microcavity, W state

Abstract: We propose a practical entanglement concentration protocol (ECP) for a hybrid entangled state using quantum dots and microcavity coupled system. A hybrid less-entangled state can be concentrated to a most-entangled state with a certain probability using only one ancillary single photon. Moreover, using this protocol, we can also concentrate arbitrary three-particle less-entangled W state using two ancillary photons and classical communication. The proposed protocols provide us with a useful method to concentrate less-entangled states, which can be implemented with current technology.

Key words: entanglement concentration, quantum dot, microcavity, W state

中图分类号: (Entanglement measures, witnesses, and other characterizations)

03.67.Mn

42.50.Pq (Cavity quantum electrodynamics; micromasers) 78.67.Hc (Quantum dots) 78.20.Ek (Optical activity)

曹聪, 王川, 张茹 . Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system[J]. 中国物理B, 2012, 21(11): 110305-110305.

Cao Cong (曹聪), Wang Chuan (王川), Zhang Ru (张茹 ). Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system[J]. Chin. Phys. B, 2012, 21(11): 110305-110305.

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Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system

Entanglement concentration for arbitrary hybrid less-entangled state and W state using quantum dots and microcavity coupled system

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