项目名称: 单光子波长变换及量子波长交换技术研究
项目编号: No.61301171
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 赵楠
作者单位: 西安电子科技大学
项目金额: 24万元
中文摘要: 随着量子通信关键技术不断突破,量子通信实验网在诸多国家建成。随着用户数不断增大,各个子网需要采用不同的通信波长,子网间信息的互通需要交互节点保障。通常采用的方式是在交换节点处对量子信息进行检测和重发,这样不仅增加了时延,易造成网络的拥塞,而且降低了整个通信过程的安全性。本项目提出了采用二次波长变换的方式实现量子波长交换,完成交换节点量子信息的不操作转发,不对量子态进行检测。方案基于现有量子通信网络常用的量子态偏振及相位编码的方式,从经典及量子理论分析和论证偏振及相位特性随时间和距离演进的具体的情况,并且研究和分析信道噪声,建立光学信道模型,最终从理论上论证量子波长交换方案的可行性。
中文关键词: 量子通信;波长交换;偏振特性;量子远程制备;
英文摘要: Network of quantum communication is are built in some countries,because of some breakthruogh in key techniques.While the number of guests is getting bigger,the sub-net need to communicate with different wavelength,and the nodes need to keep the network running.The quantum signal is need detecting and sending in the node by the ordinary mode,which increases the delay,brings the conquestion,and reduces the security.This project bring forward a scheme,in which the quantum exchange could be accomplished by twi-conversion of wavelength,and quantum messages are not be detected.The scheme is based on system of quantum polarization coding and phase coding,which appears in some quantum networks,and researches on the characteristics of plarization and phase by the way of classical and quantum mechnanics when the time and distance changes.The noise in the channel will be researched on,the model of optical channel will be constructed.The feasiblity of this scheme will be demonstrated.
英文关键词: Quantum communication;Wavelength switching;Polarization characteristic;Quantum remote preparation;