An optical scheme for conditional generation of W state and photon-added coherent state

doi:10.1088/1009-1963/16/7/013

中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1883-1888.doi: 10.1088/1009-1963/16/7/013

An optical scheme for conditional generation of W state and photon-added coherent state

景辉¹, 詹明生¹, 李燕²

(1)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; (2)State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China;Gra

收稿日期:2006-07-15 修回日期:2006-11-14 出版日期:2007-07-20 发布日期:2007-07-04
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos~10304020 and 10474117), the State Key Development Program for Basic Research of China (Grant No~2001CB309309), and also in part by the Sunshine Project of Wuhan, China.

An optical scheme for conditional generation of W state and photon-added coherent state

Li Yan(李燕)^a)b)c)†, Jing Hui(景辉)^a)b)‡, and Zhan Ming-Sheng(詹明生)^a)b)

^a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China^b Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China; ^c Graduate School of the Chinese Academy of Sciences, Beijing 100080, China

Received:2006-07-15 Revised:2006-11-14 Online:2007-07-20 Published:2007-07-04
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos~10304020 and 10474117), the State Key Development Program for Basic Research of China (Grant No~2001CB309309), and also in part by the Sunshine Project of Wuhan, China.

摘要/Abstract

摘要： We propose a simple scheme to generate an arbitrary photon-added coherent state of a travelling optical field by combining an array of degenerate parametric amplifiers and corresponding single-photon detectors. Particularly, when the single-photon-added coherent state is observed by developing the novel technique of Zavatta et al (2004 Science 306 660), we can simultaneously obtain the generalized N -qubit W state.

关键词: photon-added coherent state, W state, parametric down-conversion

Abstract: We propose a simple scheme to generate an arbitrary photon-added coherent state of a travelling optical field by combining an array of degenerate parametric amplifiers and corresponding single-photon detectors. Particularly, when the single-photon-added coherent state is observed by developing the novel technique of Zavatta et al (2004 Science 306 660), we can simultaneously obtain the generalized N-qubit W state.

Key words: photon-added coherent state, W state, parametric down-conversion

中图分类号:

42.50.Ar

李燕, 景辉, 詹明生. An optical scheme for conditional generation of W state and photon-added coherent state[J]. 中国物理B, 2007, 16(7): 1883-1888.

Li Yan(李燕), Jing Hui(景~~辉), and Zhan Ming-Sheng(詹明生) . An optical scheme for conditional generation of W state and photon-added coherent state[J]. Chinese Physics, 2007, 16(7): 1883-1888.

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An optical scheme for conditional generation of W state and photon-added coherent state

An optical scheme for conditional generation of W state and photon-added coherent state

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