中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4382-4387.doi: 10.1088/1674-1056/17/12/009

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Generation of atomic Greenberger-Horne-Zeilinger states and cluster states through cavity-assisted interaction

黄秀花, 林秀敏, 林功伟, 陈志华, 汤耀祥   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China
  • 收稿日期:2008-03-30 修回日期:2008-04-15 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), the Natural Science Foundation of Fujian Province of China (Grant Nos 2007J0002 and 2006J0230), and the Foundation for Universities in Fujian Province (Grant No 200

Generation of atomic Greenberger-Horne-Zeilinger states and cluster states through cavity-assisted interaction

Huang Xiu-Hua (黄秀花), Lin Xiu-Min (林秀敏), Lin Gong-Wei (林功伟), Chen Zhi-Hua (陈志华), Tang Yao-Xiang (汤耀祥)   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China
  • Received:2008-03-30 Revised:2008-04-15 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), the Natural Science Foundation of Fujian Province of China (Grant Nos 2007J0002 and 2006J0230), and the Foundation for Universities in Fujian Province (Grant No 200

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摘要： This paper proposes a scalable scheme to generate n-atom GHZ states and cluster states by using the basic building block, i.e., a weak coherent optical pulse |α> being reflected successively from a single-atom cavity. In the schemes, coherent state of light is used instead of single photon source, homodyne measurement on coherent light is done instead of single photon detection, and no need for individually addressing keeps the schemes easy to implement from the experimental point of view. The successful probabilities of our protocols approach unity in the ideal case.

关键词: GHZ state, cluster states, 　cavity QED

Abstract: This paper proposes a scalable scheme to generate n-atom GHZ states and cluster states by using the basic building block, i.e., a weak coherent optical pulse |$\alpha\rangle$ being reflected successively from a single-atom cavity. In the schemes, coherent state of light is used instead of single photon source, homodyne measurement on coherent light is done instead of single photon detection, and no need for individually addressing keeps the schemes easy to implement from the experimental point of view. The successful probabilities of our protocols approach unity in the ideal case.

Key words: GHZ state, cluster states, 　cavity QED

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
03.65.Ud (Entanglement and quantum nonlocality) 42.50.Pq (Cavity quantum electrodynamics; micromasers)