Probabilistic teleportation of an unknown N-atom state using a two-atom nonmaximally entangled state in cavity QED  

作　　者：林秀 李洪才 杨榕灿 

机构地区：[1]School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 350007, China

出　　处：《Chinese Physics B》2007年第3期624-629,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 10574022）, and the Funds of the Natural Science of Fujian Province, China （Grant No Z0512006）.

摘　　要：We present a scheme for realizing probabilistic teleportation of an unknown N-atom state via cavity QED. This scheme requires only a nonmaximally entangled pair to be used as a quantum channel, so the requirement of entanglement is reduced. In addition, 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. If the quantum channel is a two-atom maximally entangled state, teleportation of an unknown N-atom state can be realized by a simpler scheme via cavity QED.We present a scheme for realizing probabilistic teleportation of an unknown N-atom state via cavity QED. This scheme requires only a nonmaximally entangled pair to be used as a quantum channel, so the requirement of entanglement is reduced. In addition, 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. If the quantum channel is a two-atom maximally entangled state, teleportation of an unknown N-atom state can be realized by a simpler scheme via cavity QED.

关 键 词：probabilistic teleportation without Bell-state measurement atomic entangled state nonmaximally entangled pair cavity QED 

分 类 号：O413.3[理学—理论物理]