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Quantum teleportation by entanglement swapping with trapped ions
作者姓名:郑小娟  方卯发  蔡建武  廖湘萍
作者单位:College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;School of Physics Science and Technology, Central South University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
基金项目:Project supported by the National Natural Science Foundation of China (Grant No 10374025).
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 teleportatlon in a longer distance. The distinct advant.age 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:量子输运  缠结交换  陷落离子  未知离子  量子通道
收稿时间:2005-11-03
修稿时间:2005-11-032005-11-17

Quantum teleportation by entanglement swapping with trapped ions
Zheng Xiao-Juan,Fang Mao-F,Cai Jian-Wu and Liao Xiang-Ping.Quantum teleportation by entanglement swapping with trapped ions[J].Chinese Physics B,2006,15(3):492-495.
Authors:Zheng Xiao-Juan  Fang Mao-F  Cai Jian-Wu and Liao Xiang-Ping
Institution:College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;School of Physics Science and Technology, Central South University, Changsha 410081, China
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.
Keywords:entanglement  entanglement swapping  quantum teleportation  trapped ions
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