中国物理B ›› 2006, Vol. 15 ›› Issue (8): 1695-1699.doi: 10.1088/1009-1963/15/8/010

• GENERAL • 上一篇    下一篇

Protocol for multi-party superdense coding by using multi-atom in cavity QED

谭　佳, 方卯发   

  1. Department of Physics, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2005-12-16 修回日期:2006-04-28 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).

Protocol for multi-party superdense coding by using multi-atom in cavity QED

Tan Jia(谭佳) and Fang Mao-Fa(方卯发)†   

  1. Department of Physics, Hunan Normal University, Changsha 410081, China
  • Received:2005-12-16 Revised:2006-04-28 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： We present a protocol for multi-party superdense coding by using multi-atom in cavity quantum electrodynamics (QED). It is shown that, with a highly detuned cavity mode and a strong driving field, the protocol is insensitive to both cavity decay and thermal field. It is even certain to identify GHZ states via detecting the atomic states. Therefore we can realize the quantum dense coding in a simple way in the multiparty system.

Abstract: We present a protocol for multi-party superdense coding by using multi-atom in cavity quantum electrodynamics (QED). It is shown that, with a highly detuned cavity mode and a strong driving field, the protocol is insensitive to both cavity decay and thermal field. It is even certain to identify GHZ states via detecting the atomic states. Therefore we can realize the quantum dense coding in a simple way in the multiparty system.

Key words: dense coding, cavity QED

中图分类号:  (Entanglement and quantum nonlocality)

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