中国物理B ›› 2006, Vol. 15 ›› Issue (4): 676-680.doi: 10.1088/1009-1963/15/4/004

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Efficient scheme for teleportation of an unknown N-atom state via a two-atom entangled state without the Bell-state measurement in cavity QED

刘翔1, 方卯发1, 汪新文2   

  1. (1)Department of Physics, Hunan Normal University, Changsha 410081, China; (2)Department of Physics, Hunan Normal University, Changsha 410081, China;Department of Physics, Hunan University of Science and Engineering, Yongzhou 425006 , China
  • 收稿日期:2005-06-02 修回日期:2005-06-16 出版日期:2006-04-20 发布日期:2006-04-20
  • 基金资助:
    roject supported by the National Natural Science Foundation of China (Grant No 10374025) and the Scientific Research Fund of Hunan Provincial Education Department (Grant No 01c260).

Efficient scheme for teleportation of an unknown N-atom state via a two-atom entangled state without the Bell-state measurement in cavity QED

Wang Xin-Wen (汪新文)ab, Liu Xiang (刘翔)a, Fang Mao-Fa (方卯发)a   

  1. a Department of Physics, Hunan Normal University, Changsha 410081, China; b Department of Physics, Hunan University of Science and Engineering, Yongzhou 425006, China
  • Received:2005-06-02 Revised:2005-06-16 Online:2006-04-20 Published:2006-04-20
  • Supported by:
    roject supported by the National Natural Science Foundation of China (Grant No 10374025) and the Scientific Research Fund of Hunan Provincial Education Department (Grant No 01c260).

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摘要： We propose a scheme for teleportation of an unknown $N$-atom state using a two-atom entangled state within a cavity QED and show the feasibility in experiment. Our scheme does not involve the Bell-state measurement and is insensitive to the cavity decay, which is important from the experimental point of view. Another feature of the scheme is that teleporting a N-atom state just requires a small amount of entanglement (i.e. a two-atom entangled state) and less classical bits (two bits).

关键词: atomic entangled state, teleportation, thermal cavity, vacuum cavity

Abstract: We propose a scheme for teleportation of an unknown $N$-atom state using a two-atom entangled state within a cavity QED and show the feasibility in experiment. Our scheme does not involve the Bell-state measurement and is insensitive to the cavity decay, which is important from the experimental point of view. Another feature of the scheme is that teleporting a $N$-atom state just requires a small amount of entanglement (i.e. a two-atom entangled state) and less classical bits (two bits).

Key words: atomic entangled state, teleportation, thermal cavity, vacuum cavity

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.65.Ta (Foundations of quantum mechanics; measurement theory) 03.67.-a (Quantum information) 42.50.Dv (Quantum state engineering and measurements) 42.50.Pq (Cavity quantum electrodynamics; micromasers)