中国物理B ›› 2005, Vol. 14 ›› Issue (3): 533-535.doi: 10.1088/1009-1963/14/3/018

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Robust scheme for the generation of entangled states for N atoms in a cavity

郑仕标   

  1. Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
  • 收稿日期:2004-09-23 修回日期:2004-10-28 出版日期:2005-03-02 发布日期:2005-03-02
  • 基金资助:
    Project supported by the Fok Ying Tung Education Foundation, China (Grant No 81008) and the National Natural Science Foundation of China (Grant Nos 60008003 and 10225421).

Robust scheme for the generation of entangled states for N atoms in a cavity

Zheng Shi-Biao (郑仕标)   

  1. Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
  • Received:2004-09-23 Revised:2004-10-28 Online:2005-03-02 Published:2005-03-02
  • Supported by:
    Project supported by the Fok Ying Tung Education Foundation, China (Grant No 81008) and the National Natural Science Foundation of China (Grant Nos 60008003 and 10225421).

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摘要： A scheme is proposed for the generation of W entangled states for several atoms trapped in a cavity by detecting photon decay. The scheme works in the regime, where the cavity decay rate is larger than the atom-cavity coupling strength. Thus, the requirement for the quality factor of the cavity is greatly loosened, which is of importance in view of experiment. Another advantage of this scheme is that the atoms are always populated in two ground states coupled by Raman transitions, thus the spontaneous emission can also be suppressed.

关键词: entangled states, photon, spontaneous emission

Abstract: A scheme is proposed for the generation of W entangled states for several atoms trapped in a cavity by detecting photon decay. The scheme works in the regime, where the cavity decay rate is larger than the atom-cavity coupling strength. Thus, the requirement for the quality factor of the cavity is greatly loosened, which is of importance in view of experiment. Another advantage of this scheme is that the atoms are always populated in two ground states coupled by Raman transitions, thus the spontaneous emission can also be suppressed.

Key words: entangled states, photon, spontaneous emission

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

  • 42.50.Dv
37.10.De (Atom cooling methods) 32.50.+d (Fluorescence, phosphorescence (including quenching))