量子电子学报2011，Vol.28Issue(4)：414-419,6.DOI:10.3969/j.issn.1007-5461.2011.04.005
远程制备任意双粒子态
Remote preparation of arbitrary two-qubit state
摘要
Abstract
Inspired by the idea of Wang and Yan's,i.e.,a two-step exact remote state preparation (RSP) of an arbitrary qubit,the remote preparation of arbitrary two-qubit state was studied.In the scheme,two non-maximally entangled GHZ states act as quantum channels.The sender Alice divides the full information encoded in known state into two parts,one purely real coefficient and the other purely real phase factor.After twice projective measurements and the transmission of 4-bit classical information by Alice,the remote receiver Bob can obtain the desired state with the success probability 4|βγ|2 which is higher than that in Liu's protocol and it is also the advantage of our scheme,because only two-qubit state in real Hilbert space or equatorial-like state can reach this success probability value in Liu's protocol.关键词
量子光学/远程态制备/GHZ态Key words
quantum optics/remote state preparation/GHZ state分类
数理科学引用本文复制引用
石国芳..远程制备任意双粒子态[J].量子电子学报,2011,28(4):414-419,6.基金项目
This work was supported by The Specialized Research Program of Education Department of Shaanxi Province (2010JK828) and The Youth Foundation of Xi'an University of Posts and Telecommunications (ZL2010-33) （2010JK828）
