中国物理B ›› 2006, Vol. 15 ›› Issue (3): 492-495.doi: 10.1088/1009-1963/15/3/007

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Quantum teleportation by entanglement swapping with trapped ions

方卯发1, 蔡建武1, 廖湘萍1, 郑小娟2   

  1. (1)College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; (2)College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;School of Physics Science and Technology, Central South University, Changsha 410081, China
  • 收稿日期:2005-11-03 修回日期:2005-11-17 出版日期:2006-03-20 发布日期:2006-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

Quantum teleportation by entanglement swapping with trapped ions

Zheng Xiao-Juan (郑小娟)ab, Fang Mao-Fa (方卯发)a, Cai Jian-Wu (蔡建武)a, Liao Xiang-Ping (廖湘萍)a   

  1. a College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; b School of Physics Science and Technology, Central South University, Changsha 410081, China
  • Received:2005-11-03 Revised:2005-11-17 Online:2006-03-20 Published:2006-03-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025).

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摘要： An effective teleportation scheme for an unknown ionic internal state via trapped ions is proposed without joint Bell-state measurement (BSM). In the constructed quantum channel process, we make use of entanglement swapping to avoid decrease in entanglement during the distributing of particles. Thus our scheme provides new prospects for quantum teleportation in a longer distance. The distinct advantage of our scheme is insensitive to the heating of vibrational mode. Furthermore, our scheme has no any individual optical access, and the successful probability also can reach 1.

关键词: entanglement, entanglement swapping, quantum teleportation, trapped ions

Abstract: An effective teleportation scheme for an unknown ionic internal state via trapped ions is proposed without joint Bell-state measurement (BSM). In the constructed quantum channel process, we make use of entanglement swapping to avoid decrease in entanglement during the distributing of particles. Thus our scheme provides new prospects for quantum teleportation in a longer distance. The distinct advantage of our scheme is insensitive to the heating of vibrational mode. Furthermore, our scheme has no any individual optical access, and the successful probability also can reach 1.

Key words: entanglement, entanglement swapping, quantum teleportation, trapped ions

中图分类号:  (Quantum communication)

  • 03.67.Hk
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions) 03.65.Ud (Entanglement and quantum nonlocality) 02.50.Cw (Probability theory)