光子四维量子态隐形传输  

Ququart State Teleportation

作　　者：陆晨[1] 张炜[1] 刘欢[1] 贾蕾[1] 田秀劳[1] 

机构地区：[1]西安邮电大学理学院,西安710061

出　　处：《光子学报》2012年第12期1394-1399,共6页Acta Photonica Sinica

基　　金：陕西省教育厅专项基金(No.12JK0992)资助

摘　　要：多维量子纠缠态比二维纠缠态可加载更多的信息,多维量子系统是量子信息处理中一个很重要的资源.本文采用已实现的光子四维纠缠态,给出了光子四维量子态的张量表达式,并描述了四维量子态隐形传输的一般表示方法;通过讨论光子四维量子态系统的量子通道参数矩阵和测量矩阵的特性,得到实现完全传输和非零概率传输的充要条件.最后,本文给出在多种量子通道下的四维态的量子隐形传态方案,这一过程在张量分析表示下十分清晰明了.Qudit quantum system can carry more information than that of qubit, so it is an important resource in quantum information processing. The ququart state with the tensor representation is gotten in term of the photon entangled state. The necessary and sufficient condition for realizing a successful or perfect teleportation is obtained, as will be shown, this condition is determined by the measurement matrix and the quantum channel parameter matrix. The general expressions of the measurement matrix are written out and the quantum channel parameter matrix are discussed. Furthermore, the teleportation of ququart state is proposed via different kinds of quantum channels. The description of the teleporting process with the help of tensor analysis is more compact and clear.

关 键 词：隐形传态 四维态 通道参数矩阵 测量矩阵 

分 类 号：O437.4[机械工程—光学工程]