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Chinese Physics, 2006, Vol. 15(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

Wang Xin-Wen (汪新文)ab, Liu Xiang (刘翔)a, Fang Mao-Fa (方卯发)a
a Department of Physics, Hunan Normal University, Changsha 410081, China; b Department of Physics, Hunan University of Science and Engineering, Yongzhou 425006, China
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).
Keywords:  atomic entangled state      teleportation      thermal cavity      vacuum cavity  
Received:  02 June 2005      Revised:  16 June 2005      Accepted manuscript online: 
PACS:  03.65.Ud (Entanglement and quantum nonlocality)  
  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)  
Fund: 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).

Cite this article: 

Wang Xin-Wen (汪新文), Liu Xiang (刘翔), Fang Mao-Fa (方卯发) Efficient scheme for teleportation of an unknown N-atom state via a two-atom entangled state without the Bell-state measurement in cavity QED 2006 Chinese Physics 15 676

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