基于布朗态受控的安全量子对话方案(英文)  

Controlled Secure Quantum Dialogue by Using Brown States

作　　者：杨幼凤[1] 叶志清[1] 涂春雷 

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

出　　处：《光子学报》2013年第11期1305-1310,共6页Acta Photonica Sinica

基　　金：The National Natural Science Foundation of China(No.61368001);the Natural Science Foundation of Jiangxi Province(No.20114BAB202003); the Scientific Research Project of Jiangxi Province Education department(No.GJJ10401)

摘　　要：提出了一个基于布朗态受控安全量子对话方案.Alice、Bob和Charlie共享一个五粒子布朗态,Alice将自己要传递给Bob的秘密信息通过对其中两个粒子做幺正变换,实现待传的经典信息的编码;同理,Bob对另外两个粒子做相应的幺正操作,实现待传的经典信息的编码;随后,Charlie对布朗终态做布朗基的联合测量,并公布测量结果;Alice和Bob根据Charlie公布的结果及自己编码时用的幺正变换,解码出对方传送的经典信息,完成安全量子对话.与以往的量子对话相比,该方案不仅增加了第三方控制,确保了通信双方对话安全,而且增加了参与通信过程的粒子数目,提高了编码效率.A novel scheme of controlled secure quantum dialogue by using Brown states was proposed in this paper. It this scheme, Alice, Bob and Charlie shared a five-particle Brown states. Alice made unitary operations on two particles of the Brown states to realize encoding her secret calssical message. Similarly, Bob performed corresponding unitary transformations to another two particles to encode the information that he wanted to send to Alice. Later, Charlie made Brown base states joint measurement on the Brown final state and announced the measured results. Alice and Bob deduced the opposite party＇s information according to Charlie＇s announced measurement results and her （his） unitary operation when encoding.They completed quantum dialogue successfully. Then the scheme＇s security was discussed and a conclusion was drawn. Compared with the previous quantum dialogues, the secure quantum dialogue scheme adds the controlled party, ensures the communication security, and increases the particles number involving in the communication process and the coding efficiency.

关 键 词：量子对话 布朗态 安全 高编码效率 

分 类 号：TN918[电子电信—通信与信息系统]