中国物理B ›› 2007, Vol. 16 ›› Issue (3): 624-629.doi: 10.1088/1009-1963/16/3/011

• GENERAL • 上一篇    下一篇

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

林秀, 李洪才, 杨榕灿   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University,Fuzhou 350007, China
  • 收稿日期:2006-04-11 修回日期:2006-06-20 出版日期:2007-03-20 发布日期:2007-03-20
  • 基金资助:
    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).

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

Lin Xiu (林秀)†, Li Hong-Cai(李洪才), and Yang Rong-Can(杨榕灿)   

  1. School of Physics and Optoelectronics Technology, Fujian Normal University,Fuzhou 350007, China
  • Received:2006-04-11 Revised:2006-06-20 Online:2007-03-20 Published:2007-03-20
  • Supported by:
    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).

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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.

Abstract: 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.

Key words: probabilistic teleportation without Bell-state measurement, atomic entangled state, nonmaximally entangled pair, cavity QED

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
03.65.Ud (Entanglement and quantum nonlocality) 03.75.Be (Atom and neutron optics)