基于离散调制连续变量量子密码的实验可组合密钥分配

IF 23.4 Q1 OPTICS
Adnan A. E. Hajomer, Florian Kanitschar, Nitin Jain, Michael Hentschel, Runjia Zhang, Norbert Lütkenhaus, Ulrik L. Andersen, Christoph Pacher, Tobias Gehring
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引用次数: 0

摘要

建立安全的数据通信需要在公共通道上进行安全的密钥交换。利用量子物理原理的量子密钥分发(QKD)可以在具有信息论安全性的情况下实现这一目标。特别是离散调制(DM)连续变量(CV) QKD协议,由于其简单性和与标准高速电信技术的兼容性,是大规模部署量子安全通信的合适候选。在这里,我们提出了一个四态DM CVQKD系统的第一个实验演示,成功地生成了可组合的有限大小密钥,防止了2.3 × 109相干量子态在20公里光纤信道上的集体攻击,实现了11.04 × 10−3比特/符号的正可组合密钥速率。这一成就是通过使用先进的安全证明,精心选择其参数,以及系统的快速,稳定的运行。我们的研究结果标志着使用标准电信组件大规模部署实用、高性能、经济高效和高度安全的量子密钥分发网络的重要一步。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Experimental composable key distribution using discrete-modulated continuous variable quantum cryptography

Experimental composable key distribution using discrete-modulated continuous variable quantum cryptography

Establishing secure data communication necessitates secure key exchange over a public channel. Quantum key distribution (QKD), which leverages the principles of quantum physics, can achieve this with information-theoretic security. The discrete modulated (DM) continuous variable (CV) QKD protocol, in particular, is a suitable candidate for large-scale deployment of quantum-safe communication due to its simplicity and compatibility with standard high-speed telecommunication technology. Here, we present the first experimental demonstration of a four-state DM CVQKD system, successfully generating composable finite-size keys, secure against collective attacks over a 20 km fiber channel with 2.3 × 109 coherent quantum states, achieving a positive composable key rate of 11.04 × 10−3 bits/symbol. This accomplishment is enabled by using an advanced security proof, meticulously selecting its parameters, and the fast, stable operation of the system. Our results mark a significant step toward the large-scale deployment of practical, high-performance, cost-effective, and highly secure quantum key distribution networks using standard telecommunication components.

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来源期刊
Light-Science & Applications
Light-Science & Applications 数理科学, 物理学I, 光学, 凝聚态物性 II :电子结构、电学、磁学和光学性质, 无机非金属材料, 无机非金属类光电信息与功能材料, 工程与材料, 信息科学, 光学和光电子学, 光学和光电子材料, 非线性光学与量子光学
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审稿时长
2.1 months
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