一种新的基于纠缠交换的量子秘密共享协议  

New quantum secret sharing protocol based on entanglement swapping

作　　者：权东晓[1] 赵楠[1] 裴昌幸[1] 朱畅华[1] 刘丹[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,陕西西安710071

出　　处：《光电子．激光》2011年第1期71-74,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(61072067;60832001;60672119);高等学校学科创新引智计划资助项目(B08038);国家重点实验室专项资金资助项目(ISN02080002;ISN090307)

摘　　要：分析了基于纠缠交换的量子秘密共享(QSS)协议的不安全性,提出了一种新的基于纠缠交换的QSS协议。所有的纠缠态都由发送方制备,并且随机改变发送给同一个代理两个粒子的相对顺序。接收方收到粒子后,如果是检测模式,发送方公布两个粒子的相对顺序,双方进行窃听检测;如果是信息模式,两个接收方分别对各自收到的两个粒子进行联合测量,两者联合起来与发送方共享密钥。分析结果表明,此协议不仅能够保证共享信息的正确性和安全性,而且只用到两粒子纠缠态,也不需要进行幺正操作,实现简单可行。The insecurity of the protocols for quantum secret sharing（QSS） based on entanglement swapping was analyzed,and a new method of QSS based on entanglement swapping was proposed.The entanglement states were all generated by the sender,and the order of two photons sent to the same agent was randomly changed.After the photons arrived at the receiver,for the detection mode,the order of the two photons was announced,so that the two parties detected the security of the quantum channel;for the information mode,the two receivers respectively did Bell measurement on the two photons they owned,and then communicated through classical channel to share the secret key with the sender.Analysis results show that this protocol not only ensures the validity and security of the shared information,but also only uses the entanglement states of two photons without unitary operation.

关 键 词：量子通信 量子秘密共享(QSS) 纠缠交换 

分 类 号：TN918[电子电信—通信与信息系统]