南宁经典网络设施部署量子密钥分发网络  

Deploying quantum key distribution network over a classical network infrastructure in Nanning

作　　者：文静 李森 刘馨 黄春凤 王军伟 石涛 韦克金 WEN Jing;LI Sen;LIU Xin;HUANG Chun-feng;WANG Jun-wei;SHI Tao;WEI Ke-jin(Information Center of Guangxi Zhuang Autonomous Region,Nanning 530000,China;Guangxi Key Laboratory for Relativistic Astrophysics,School of Physical Science and Technology,Guangxi University,Nanning 530004,China;Guangxi Quantum Network Co.,Ltd.,Nanning 530000,China)

机构地区：[1]广西壮族自治区信息中心,广西南宁530000 [2]广西大学物理科学与技术学院相对论天体物理实验室,广西南宁530004 [3]广西国科量子股份有限公司,广西南宁530000

出　　处：《广西大学学报（自然科学版）》2022年第3期723-731,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(62031024,62171144);广西自然科学基金项目(2021JJA170007)。

摘　　要：针对实现一个实用化的量子网络依然需要克服的几个挑战,包括在不改变原有经典网络的基础上,嵌入QKD专网,实现简单的网络维护以及节点故障的鲁棒性,本研究实现一个由5个节点组成的量子城域网的现场,并证明最新的量子技术可以克服这些挑战。特别地,通过灵活地使用标准设备进行网络建设,在不改变原有经典网络拓扑结构的情况下,成功嵌入QKD专网,实现连续运行6个月的量子保密通信网络。通过完善的密钥控制中心,实现了QKD配对和密钥管理。现场实现的最终密钥可用于安全通信,例如文本短信和文件传输,以及一次一密加密。本研究工作验证原有数据传输网络上构建基于QKD的量子保密网络的可行性。To achieve a practical quantum network,we need to overcome several challenges including deploying quantum network without changing original topology,simple network maintenance and extendable configuration.This work presented a field operation of a quantum metropolitan-area network with 5 nodes and showed that all these challenges can be overcome with current quantum technologies.In particular,the QKD network was successfully embedded without changing the original classic network topology and hence realize a 6-month continuous quantum network by flexible use of standard equipment.This work realized QKD pairing and key management with a sophisticated key control center.In this implementation,the final keys have been used for secure communication such as text messaging and file transmission with one-time pad encryption.Our work verified the feasibility of deploying a QKD-based quantum secure network on the classical network.

关 键 词：量子密钥分发 量子网络 量子通信 量子密码学 量子信息处理 

分 类 号：TN929.11[电子电信—通信与信息系统]