光孤子对量子态的高速调制  

High-speed modulation of quantum state by optical soliton

作　　者：赵义红[1] 李正文[1] 刘永智[1] 何其四[1] 

机构地区：[1]成都理工大学信息工程学院,四川成都610059

出　　处：《光电工程》2005年第6期47-50,共4页Opto-Electronic Engineering

基　　金：国家自然科学基金项目(10404039)

摘　　要：从高速调制的角度,研究了量子光通信系统。提出用孤子调制承载量子态的方案。方案着重从调制量子态的通信信道出发,分别论证了孤子在NLSE光纤和SIT媒介中的传输演变;得出量子压缩态和纠缠态可以在二级传输线(由传统光纤和支持自激励透明孤子的二级媒介组成)中,由孤子的传输演变产生;从而实现孤子对量子态的调制。这种调制方案,利用了光的波粒二重性,融合了量子和孤子的特性,是未来量子光通信的一种发展趋势。A modulation method of a quantum communication system is studied and a scheme of modulating quantum states in high-speed with soliton is proposed in the paper. The transmission evolution of soliton in NLSE optic fiber and in SIT media is demonstrated by modulating communication channel of quantum state, respectively. It is concluded that two-component transmission line can produce quantum entangled states (or squeezed states) in the soliton transmission. The wavicle of light is used for the modulation and the properties of quantum and soliton are fused. This scheme is a development trend for future quantum communication.

关 键 词：量子通信 纠缠态 孤子 调制 

分 类 号：TN929.1[电子电信—通信与信息系统]