基于纠的CV-QKD,在纠辅助链路上进行信息和解
Ivan B Djordjevic1, Vijay Nafria1
1Department of Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Blvd., Tucson, AZ 85721, USA.
Entropy (Basel, Switzerland)
|April 26, 2024
概括
本研究引入了一种新的连续变量量子密钥分配 (CV-QKD) 系统,使用纠来实现安全通信. 这种新的方法提高了安全性和性能,即使在具有挑战性的环境中.
科学领域:
- 量子信息科学 量子信息科学
- 量子密码学 量子密码学
- 自由空间光学自由空间光学
背景情况:
- 连续可变量子密钥分布 (CV-QKD) 是一个有前途的安全通信技术.
- 现有的CV-QKD方案通常依赖于认证的公共通道或经典的自由空间链接来协调信息,这可能会限制性能和安全性.
- 基于纠的QKD提供了增强的安全性,但需要有效的和解策略.
研究的目的:
- 提出并实验证明一种基于纠的连续变量量子密钥分布 (CV-QKD) 方案.
- 通过在纠辅助链路上进行信息和解,提高CV-QKD的性能和安全性.
- 在现实的自由空间光学条件下评估拟议方案的可行性,包括强流动.
主要方法:
- 开发了一个基于纠的CV-QKD协议,使用单个纠源来生成原始密钥和信息和解.
- 在纠源中使用了低成本的C频段设备.
- 在自由空间光学测试台上实施该方案,并结合了适应光学来减轻流效应.
主要成果:
- 拟议的CV-QKD方案与纠辅助和解显著优于使用认证的公共通道或经典的自由空间链接的方案.
- 实验演示证实了该系统在强的流状态下可操作.
- 适应光学进一步提高了秘密密钥速率的性能.
结论:
- 纠辅助信息和解为CV-QKD系统提供了一种优越的方法.
- 拟议的低成本,基于纠的CV-QKD系统强大,在具有挑战性的大气条件下表现良好.
- 这项工作为更实用和更安全的自由空间量子通信网络铺平了道路.
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