摘要
连续变量量子密钥分发(Continuous Variable Quantum Key Distribution,CVQKD)允许合法的通信双方以绝对安全的方式传输密钥。为了达到理想的安全性,在后处理阶段需采用多维协调。然而多维方案带来系统增益的同时,发送端也需要传输更多的辅助译码参数。针对以上问题,提出了连续变量量子密钥分发的新型传输方案。通过构建虚拟信道模型,分析模型的虚拟噪声参数,成功证明了在传统方案中,辅助译码参数y的传输是非必要的,并给出了估算的辅助参数值。仿真结果表明,估算的辅助参数值可以代替y。
Continuous Variable Quantum Key Distribution(CVQKD)allows two legal communication parties to share keys in an absolutely secure way.In order to achieve the desired security,multi-dimensional reconciliation is required in the post-processing.While the multi-dimensional reconciliation brings system gain,the sender also needs to transmit more auxiliary decoding parameters.Therefore,a novel reconciliation scheme of CVQKD has been proposed.By constructing a virtual channel and analyzing the channel noise parameters,it is successfully proved that in the traditional reconciliation scheme,the transmission of auxiliary decoding parametersyis unnecessary.The estimated auxiliary parameter values are also given.The simulation results show that the estimated auxiliary parameter value can replacey.
作者
窦寅
张梅香
周玲霞
DOU Yin;ZHANG Meixiang;ZHOU Lingxia(College of Information Engineering,Yangzhou University,Yangzhou 225009,China)
出处
《无线电工程》
北大核心
2022年第4期685-691,共7页
Radio Engineering
基金
国家自然科学基金青年基金(61601403)
扬州大学青年骨干基金。
