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.
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)。
关键词
量子稠密编码
量子纠缠
H变换
quantum dense coding
quantum entanglement
H transformation
