通过优势蒸进行非对称测量设备独立的量子密钥分布
Kailu Zhang1,2,3, Jingyang Liu1,2,3, Huajian Ding1,2,3
1Institute of Quantum Information and Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
Entropy (Basel, Switzerland)
|August 26, 2023
概括
本研究引入了一种优势蒸方法,以增强不对称的测量设备独立量子密钥分布 (MDI-QKD). 新方法提高了秘密密钥速率和传输距离,特别是在现实世界,不平衡的量子网络中.
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
- 网络安全 网络安全
背景情况:
- 测量设备独立量子密钥分布 (MDI-QKD) 通过减轻设备缺陷来提高安全性.
- 现有的MDI-QKD模型主要使用对称通道损失假设,这些假设并不反映现实的量子网络.
- 量子网络中的不对称通道损失对MDI-QKD性能构成挑战.
研究的目的:
- 提出和评估一种优势蒸 (AD) 方法,以改善不对称的MDI-QKD.
- 在非对称通道条件下,提高MDI-QKD系统的秘密密钥速率和传输距离.
- 适应MDI-QKD用于实际的量子网络部署,具有不同的频道损失.
主要方法:
- 在不对称的MDI-QKD框架内实施优势蒸 (AD) 技术.
- 模拟分析拟议的AD方法的性能.
- 结果与现有的对称和不对称MDI-QKD模型进行比较.
主要成果:
- 在非对称的MDI-QKD中,AD方法显著提高了秘密密钥率.
- AD方法扩大了对不对称的MDI-QKD可实现的传输距离.
- 在高度不对称的道损失场景中,性能增长尤其显著.
结论:
- 优势蒸是一种有效的策略,可以提高不对称的MDI-QKD性能.
- 这种方法提供了一种实用的方法,可以在现实的,不平衡的量子网络中促进MDI-QKD.
- 拟议的计划有助于推动未来的MDI-QKD网络发展.
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