利用单光子的量子对话(英文)  

Quantum Dialogue by Using Single Photons

作　　者：计新[1] 金星日[2] 张英俏[1] 张寿[1] 

机构地区：[1]哈尔滨工业大学物理系,黑龙江哈尔滨150001 [2]延边大学理学院物理系,吉林延吉133002

出　　处：《量子光学学报》2008年第3期273-276,共4页Journal of Quantum Optics

基　　金：the National Natural Science Foundation of China under Grant(60667001);the Science Foun-dation of Yanbian University under Grant(2007-35)~~

摘　　要：提出了一个利用一束单光子对话的方案。在方案中,利用两个不同的幺正操作对光子态进行编码,并且从一束光子中选择较大的子集进行窃听检查,该方案能够有效地抵御截取再发送袭击。此外,由于利用单光子没有利用EPR对,因此该方案是很实际的。该方案是绝对安全的。We propose a quantum dialogue scheme using a batch of single photons. In the scheme, we encode the states of the single photons with the secret message by two different unitary operations, and select randomly a suffi- ciently large subset of photons from the batch to check eavesdropping, so, our scheme can resist the intercept-and- resend attack efficiently. In addition, our scheme is practical because it uses usingle photons instead of EPR pairs. The conclusion shows that the scheme is unconditionally secure.

关 键 词：量子对话 单光子 么正操作 

分 类 号：O431[机械工程—光学工程]