An efficient scheme for multi-party quantum state sharing via non-maximally entangled states  

作　　者：JIANG Min HUANG Xu ZHOU LiuLei ZHOU YiMing ZENG Jia 

机构地区：[1]School of Electronics ＆ Information Engineering, Soochow University, Suzhou 215006, China [2]Beijing Institute of Space Science and Technology Information, Beijing 100086, China

出　　处：《Chinese Science Bulletin》2012年第10期1089-1094,共6页

基　　金：the National Natural Science Foundation of China (61104002,60904034 and 61071214);the Natural Science Foundation of Jiangsu Province (BK2011283 and BK2011377);Natural Science Foundation of the Jiangsu Higher Education Institutions of China (10KJB510024)

摘　　要：We present a new scheme for investigating the usefulness of non-maximally entangled states for multi-party quantum state shar-ing in a simple and elegant manner.In our scheme,the sender,Alice shares n various probabilistic channels composed of non-maximally entangled states with n agents in a network.Our protocol involves only Bell-basis measurements,single qubit measurements,and a two-qubit unitary transformation operated by free optional agents.Our scheme is a more convenient realiza-tion because no other multipartite joint measurements are needed.Furthermore,in our scheme various probabilistic channels lessen the requirement for quantum channels,which makes it more practical for physical implementation.We present a new scheme for investigating the usefulness of non-maximally entangled states for multi-party quantum state sharing in a simple and elegant manner. In our scheme, the sender, Alice shares n various probabilistic channels composed of non-maximally entangled states with n agents in a network. Our protocol involves only Bell-basis measurements, single qubit measurements, and a two-qubit unitary transformation operated by free optional agents. Our scheme is a more convenient realiza- tion because no other multipartite joint measurements are needed. Furthermore, in our scheme various probabilistic channels lessen the requirement for quantum channels, which makes it more practical for physical implementation.

关 键 词：非最大纠缠态 量子状态 共享 基础测量 量子比特 幺正变换 代理经营 联合测量 

分 类 号：O413[理学—理论物理] TN918[理学—物理]