基于6粒子纠缠态的未知单粒子态量子信息共享  

Quantum State Sharing of an Arbitrary Single Qubit State by Using a Genuinely Entangled Six-Qubit State as a Quantum Channel

作　　者：李翠翠[1] 聂义友[1,2] 桑明煌[1] 

机构地区：[1]江西师范大学物理与通信电子学院,江西南昌330022 [2]江西省光电子与通信重点实验室,江西南昌330022

出　　处：《江西师范大学学报（自然科学版）》2012年第3期267-270,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：江西省自然科学基金(2009GZW0005);江西省研究生创新基金(YC2011-S035);江西师大研究生创新基金(YJS2011038)资助项目

摘　　要：以6粒子纠缠态为量子信道,提出了一个单粒子未知态的量子信息共享方案.首先信息发送者对手中的粒子进行Bell基测量和单粒子测量,接着合法双方的任意一方对自己拥有的粒子做一次单粒子测量,则另一方对自己拥有的粒子进行适当的幺正变换,就可以重建原始粒子态,从而实现了量子信息共享.该方案成功的概率为100%.A scheme for quantum state sharing of an arbitrary single qubit state by using a genuinely entangled six-qubit state as a quantum channel is proposed. Firstly, the sender performs the Bell-state measurement and single qubit measurements on her qubits, respectively. Then any one of the two legitimate agents make a single qubit measure- ment on his qubit, and the other one（receiver） can reconstruct the original arbitrary single qubit state by performing appropriate unitary operation on his particle. The successful orobabilitv of this scheme is 100%.

关 键 词：量子信息共享 6粒子纠缠态 测量 幺正变换 

分 类 号：O626.4[理学—有机化学]