Reestablishment of an Unknown State and Its Orthogonal Complement State with Assistance  

作　　者：CHENAi-Xi WUShu-Dong 

机构地区：[1]WuhanInstituteofPhysicsandMathematics,theChineseAcademyofSciences,Wuhan430071,China [2]InstituteofPhysics,theChineseAcademyofSciences,Beijing100080,China

出　　处：《Communications in Theoretical Physics》2003年第6X期651-654,共4页理论物理通讯（英文版）

基　　金：国家自然科学基金

摘　　要：In this paper, we propose a protocol where one can realize reestablishment of an unknown state and its orthogonal complement state with a certain probability. In the first stage of the protocol, teleportation is performed between Alice (a sender) and Bob (a receiver) through a nonmaximally entangled quantum channel. In the process of teleportation, Alice performs nonmaximally entangled state measurement. In the second stage of the protocol, Victor (a state preparer) disentangles leftover nonmaximally entangled states by a single-particle measurement. With the assistance of Victor Alice can reestablish the original state or produce its orthogonal state.

关 键 词：远距传物 重建 非极大纠缠态 量子传输 量子管 量子论 

分 类 号：O413[理学—理论物理]