借助于推广Bell态实现两体量子态隐形传态(英文)  

Teleportation of a bipartite quantum state via generalized Bell states

作　　者：曹海静[1] 陈中华[1] 朱燕艳[1] 宋鹤山[2] 

机构地区：[1]上海电力学院直属数理系,上海201300 [2]大连理工大学物理与光电工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2010年第4期469-474,共6页Journal of Dalian University of Technology

基　　金：National Natural Science Foundation of China (Grant No . 60703100);Innovation Project of Shanghai EducationalCommission (Grant No .09YZ334);Outstanding Young Teachersin Special Funds for Scientific Research of Shanghai Universities (Grant No .sdl08005)~~

摘　　要：两比特量子隐形传态的实现直接关系到量子计算机的实现,因此提出一个任意两比特量子态的隐形传态方案,发送者能成功地将此量子态几率地传送给接收者.此方案中,16个推广的非最大纠缠Bell态(简称G态)之一充当量子信道.发送者通过实行推广的Bell态测量(G态测量),接收者通过引入一个辅助粒子并实施适当的么正变换和单粒子测量,能将此任意两比特量子态以一定的几率发送给接收者.此种隐形传态方案的成功几率由量子信道系数绝对值的最小值所决定.Two-qubit quantum teleportation is closely related to quantum computation,so a teleportation protocol in which an arbitrary bipartite quantum state is perfectly teleported probabilistically from sender to receiver is proposed. One of 16 generalized non-maximally entangled Bell states （G states for simplicity） functions as quantum channel. The teleportation can be successfully realized with a certain probability if sender performs generalized Bell state measurements （G measurements） and receiver introduces an auxiliary particle and operates appropriate unitary transformations and single-qubit measurements. The probability of successful teleportation is determined by the smallest one among the coefficients＇ absolute values of the quantum channel.

关 键 词：隐形传态 推广Bell态 辅助粒子 么正变换 

分 类 号：O413.1[理学—理论物理]