中国物理B ›› 2006, Vol. 15 ›› Issue (8): 1700-1704.doi: 10.1088/1009-1963/15/8/011

• GENERAL • 上一篇    下一篇

Remote atomic information concentration without Bell-state measurement

吴珍珍, 方卯发   

  1. Department of Physics, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2005-12-21 修回日期:2006-02-16 出版日期:2006-08-20 发布日期:2006-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

Remote atomic information concentration without Bell-state measurement

Wu Zhen-Zhen(吴珍珍) and Fang Mao-Fa(方卯发)†   

  1. Department of Physics, Hunan Normal University, Changsha 410081, China
  • Received:2005-12-21 Revised:2006-02-16 Online:2006-08-20 Published:2006-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

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摘要： This paper proposes a scheme for information concentration of two remote two-level atoms in cavity QED. This scheme does not involve the Bell-state measurement. During the interaction between atom and cavity, the cavity frequency is large-detuned from the atomic transition frequency, thus the scheme is insensitive to both the cavity decay and the thermal field. This idea can directly be generalized in the case of multi-atom information concentration.

Abstract: This paper proposes a scheme for information concentration of two remote two-level atoms in cavity QED. This scheme does not involve the Bell-state measurement. During the interaction between atom and cavity, the cavity frequency is large-detuned from the atomic transition frequency, thus the scheme is insensitive to both the cavity decay and the thermal field. This idea can directly be generalized in the case of multi-atom information concentration.

Key words: concentration, GHZ state, Bell-state measurement

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.-a (Quantum information) 42.50.Pq (Cavity quantum electrodynamics; micromasers)