利用两个EPR对几率隐形传送三粒子W纠缠态  

Probabilistic Teleportation of Three-Particle W State Using Two EPR States

作　　者：黄红梅 

机构地区：[1]武警工程大学信息工程系,陕西西安710086

出　　处：《武警工程大学学报》2013年第2期15-18,共4页Journal of Engineering University of the Chinese People＇s Armed Police Force

基　　金：基金项目：武警工程大学基础基金研究资助项目（WJY201116）

摘　　要：提出仅利用两个EPR对作为量子信道就可实现对三粒子W态的隐形传送方案，首先，引进一个辅助粒子，利用量子通道中的两个粒子，分别对辅助粒子实施CNOT操作；其次，通过构造幺正转换矩阵，可使因非最大纠缠信道导致的畸变的量子态得到恢复；最后，经过测量可概率性实现纠缠W态的隐形传送。由于使用的纠缠量子信道仅两个EPR对，不仅减少了Bell基测量的次数，而且节约了量子信道资源。We propose a scheme of probabilistic teleportation of three-particle W state using two EPR states, Firstly, we introduce an auxiliary particle and use two particles of quantum channel to perform CNOT operation on auxiliary particle respectively, secondly, by con- structing an unitary transformation,we discover the distorted quantum state for the nonmax- imally entangled channel. Finally, teleportation of three-particle entangled W state can be implemented with certain propability. It has been verlfied that the scheme proposed can re- duce the number of base measurement and save the quantum channel source.

关 键 词：隐形传态 三粒子纠缠W态 EPR对 非最大纠缠量子信道 

分 类 号：TN201[电子电信—物理电子学] O413[理学—理论物理]