量子密钥分配
计算机科学
量子网络
计算机网络
上游(联网)
钥匙(锁)
量子信道
网络拓扑
传输(电信)
接入网
同步(交流)
分布式计算
量子
量子信息
电信
频道(广播)
物理
计算机安全
量子力学
作者
Xiangyu Wang,Ziyang Chen,Zhenghua Li,Dengke Qi,Shuang Yu,Hong Guo
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-06-14
卷期号:48 (12): 3327-3327
被引量:3
摘要
Continuous-variable quantum key distribution which can be implemented using only low-cost and off-the-shelf components reveals great potential in the practical large-scale realization. Access network as a modern network necessity, connects multiple end-users to the network backbone. In this work, we demonstrate the first upstream transmission quantum access networks using continuous-variable quantum key distribution. A two-end-user quantum access network is then experimentally realized. Through phase compensation, data synchronization and other technical upgrades, we achieve 390kbps secret key rate of the total network. In addition, we extend the case of two-end-user quantum access network to the case of multiple users, and analyze the network capacity in the case of multiple users by measuring the additive excess noise from different time slots.
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