两个二量子位海森堡XX链中热纠缠态的隐形传递(英文)  

Entanglement teleportation through two two-qubit Heisenberg XX chain

作　　者：唐煌[1] 方建兴[2] 钱学旻[2] 

机构地区：[1]江苏技术师范学院物理系,江苏常州213001 [2]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《苏州大学学报（自然科学版）》2007年第2期55-59,87,共6页Journal of Soochow University(Natural Science Edition)

基　　金：Supported by the Natural Science Foundation of Jiangsu Province of China(Q1108404)

摘　　要：利用两个二量子位的海森堡XX链作为信道,进行两粒子热纠缠态的隐形传递.在一定的外界条件下,得到非零的纠缠度以及保真度大于2/3.最后发现,当磁场B较弱、温度T很低的时候,以海森堡热纠缠混合态作为量子信道的隐形传递要优越于经典信道.Quantum teleportation,using thermally entangled state of two two-qubit Heisenberg XX chain as resource,with nonzero thermal entanglement and fidelity better than any classical communication protocol is possible.It is found that the entanglement teleportation of the mixed channel is superior to the classical communication when the magnetic field B is feebleness and the temperature T is very low.

关 键 词：隐形传递 热纠缠态 纠缠度 保真度 

分 类 号：O413.1[理学—理论物理]