Probabilistically Controlled Teleportation of an Arbitrary Two-Qubit State via Positive Operator-Valued Measure  

作　　者：许海峰 韩莲芳 

机构地区：[1]School of Mechanical and Electronical Engineering,Suzhou College [2]School of Physics and Material Science,Anhui University [3]Department of Applied Physics,School of Life Science,Anhui Medical University

出　　处：《Communications in Theoretical Physics》2013年第5期554-558,共5页理论物理通讯（英文版）

基　　金：Supported by the Foundation for College Excellent Young Talents of Anhui Province under Grant Nos.2012SQRL205 and 2012SQRL206;the Foundation for Academic Youth of Anhui University;the Higher Education Natural Science Foundation of Anhui Province under Grant No.KJ2010B383

摘　　要：We propose a tripartite scheme for probabilistically teleporting an arbitrary two-qubit state with a fourqubit cluster-class state and a Bell-class state as the quantum channels. In the scheme, the sender and the controller make Bell-state measurements (BSMs) on their respective qubit pairs. With their measurement results, the receiver can reconstruct the original state probabilistically by introducing two auxiliary particles and making appropriate unitary operations and positive operator-valued measure (POVM) instead of usual projective measurement. Moreover, the total success probability and classical communication cost of the present protocol are also worked out.

关 键 词：controlled teleportation pure entangled quantum channels positive operator-valued measure success probability classical communication cost 

分 类 号：O413[理学—理论物理] TP38[理学—物理]