一种四粒子纠缠态信道量子稠密编码控制方案  

A Scheme of Controlled Quantum Dense Coding via A Four-particle Entangled State

作　　者：刘燕燕[1] 许成谦[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《通信技术》2008年第11期131-134,共4页Communications Technology

基　　金：国家自然科学基金资助项目(编号:60272026)。

摘　　要：以一个四粒子纠缠态作为量子信道,提出了一种对称信道中的量子稠密编码方案。通信中除了包含A、B收发双方外,还加入了两个控制者C和D。A、C和D需要对自己拥有的量子位进行操作,然后把粒子传送给接收者B。B在经过一系列的量子操作、量子变换及量子测量后,会获得可以代表经典数字信息的量子态。利用这一方案,A、B之间可以实现经典数字信息0～15在量子信道中的传递。A scheme is proposed to realize the controlled dense coding by using a four-particle entangled state as the quantum channel. In this scheme, A and B are the sides of sender and receiver, C and D are used as the controlling particles. A, C and D should perform appropriate quantum operations on the particles that they own respectively, then they must transfer the particles to B. After a series of quantum operations, quantum transformations and quantum measurements, B would get the quantum state which can represent classical field information. By using this scheme, A and B realize the information teleportation of classical field 0-15 in the quantum channel.

关 键 词：量子稠密编码 量子纠缠 H变换 

分 类 号：TN918.3[电子电信—通信与信息系统]