噪声背景下多用户量子信令传送保真度分析  

Transmission fidelity analysis of multiuser quantum signaling under noisy background

作　　者：聂敏[1] 

机构地区：[1]西安邮电学院通信与信息工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2012年第1期1-4,共4页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：国家自然科学基金项目(61172071);陕西省自然科学基础研究计划项目(2010JM8021);陕西省教育厅自然科学研究项目(2010JK834;2011JK1017)

摘　　要：为了研究噪声背景下多用户量子信令的传送保真度问题,给出了信令保真度的定义和传送方式,分析了信令传送成功率与纠缠度的关系,建立了保真度的计算模型,最后进行了仿真研究。结果表明,多用户量子信令传送成功率与量子信道的纠缠度密切相关,环境噪声对信道纠缠度的干扰限制了信令传送的距离和效率,在传送成功率与纠缠度之间存在指数变化规律。随着信令输出样本数的增大,信令保真度逐渐收敛。因此,为了确保量子信令的精确传送,必须根据通信距离适当调整信令输出样本数。To research the problem of transmission fidelity of multiuser quantum signaling under noisy background, the definition and transmission method of signaling fidelity were presented. The relationship between entanglement degree and signaling successful transmission ratio was analyzed. The computing model of quantum entanglement signaling was put forward, and the simulation for signaling transmission fidelity was achieved finally. The results show that the interference of environment noise to quantum signaling channel entanglement degree restricts the distance and efficiency of the signaling transmission. And the signaling fidelity is convergence gradually with the increase of the sample＇s number. To insure entanglement signaling transmission precision, the sample＇s number should be adjusted properly according to the communication distance.

关 键 词：量子纠缠信令 背景噪声 信令保真度 计算模型 

分 类 号：TN914.52[电子电信—通信与信息系统]