发表机构
Luxquanta Technologies S.L.(Luxquanta科技有限公司)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文首次实验演示了离散调制CVQKD系统,在有限大小块长度下针对一般攻击生成可组合密钥,采用QPSK和现代熵累积技术,实现实时后处理。
AI 中文摘要
连续变量量子密钥分发(CVQKD)与电信基础设施兼容,但利用实验上可行的资源实现可组合安全性仍然具有挑战性,尤其是对于离散调制(DM)协议。我们报告了首个DM CVQKD系统的实验演示,该系统通过正交相移键控(QPSK)系统,在约$\sim 10^{6}$轮的有限大小块长度下,针对一般攻击生成可组合的密钥。我们的实现遵循一个可变长度的通用安全框架,该框架由现代熵累积技术和锥优化支持,其实验流程允许在接近商业化的硬件上进行实时操作。
英文摘要
Continuous-variable quantum key distribution (CVQKD) is compatible with telecommunication infrastructure, but implementing composable security with experimentally practical resources has remained challenging, particularly for discrete-modulated (DM) protocols. We report the first experimental demonstration of a DM CVQKD system that generates composable secret keys against general attacks with finite-size block lengths on the order of $\sim 10^{6}$ rounds via a quadrature phase shift keying (QPSK) system. Our implementation follows a variable-length, general security framework enabled by modern entropy accumulation techniques and conic optimization, whose experimental pipeline allows real-time operation on near-commercial hardware.
Comments21 pages, 5 figures