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芯片集成量子签名网络超过200公里

Yongqiang Du¹, Bing-Hong Li², Xin Hua³

¹Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, 530004, China.

Light, science & applications

|March 4, 2025

概括

这项研究引入了基于芯片的量子数字签名 (QDS) 网络,使安全通信更容易获得. 这种新型系统使用集成芯片在量子网络中进行实用,大规模的部署.

科学领域:

量子信息科学量子信息科学
网络安全网络安全
综合光子学综合光子学

背景情况:

量子数字签名 (QDS) 为数据完整性,真实性和不可否认性提供信息理论上的安全性.
现有的QDS系统受到昂贵,庞大的光学设备的限制,阻碍了可扩展性和网络重新配置.

研究的目的:

开发和验证一个实用的基于芯片的量子数字签名网络.
降低QDS系统的成本和复杂性,以便广泛采用.

主要方法:

开发了一种基于芯片的QDS网络架构,用于复杂的测量设备和低成本用户发射器的中央继电器.
使用集成的编码器和解码器芯片实现了三节点网络.
使用了一个1-诱状态一次性通用哈希QDS协议.

主要成果:

在200公里光纤距离上演示了一个功能性基于芯片的QDS网络.
实现了每秒0.0414个签名的最大签名率,用于1Mbit消息.
超过了以前最先进的QDS实验的性能.

结论:

验证了基于芯片的QDS网络的可行性.
铺平了QDS在现有光纤基础设施中大规模部署和集成的道路.
实现了更容易获得和安全的量子通信解决方案.

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