论文标题
设备独立的量子密钥分布，具有逼真的单光源实现
Device Independent Quantum Key Distribution with realistic single-photon source implementations
论文作者
论文摘要
设备独立的量子密钥分布（DIKQD）旨在在遥远各方之间生成秘密密钥，而无需双方信任其设备。我们研究了一个基于单光子源和位于两党之间的中央站点的单光源测量的提案，以执行全光子DIQKD。我们得出条件，以获得单光子源的光子效率，难以区分的性能和二阶自相关函数，以达到非零的秘密率。利用此类协议的安全性界限的新结果使我们能够减少设置物理参数的要求。我们的分析表明，在被考虑的方案中，每秒几百个秘密位的关键速率在数十公里的距离处触及。
Device Independent Quantum Key Distribution (DIKQD) aims at generating secret keys between distant parties without the parties trusting their devices. We investigate a proposal for performing fully photonic DIQKD, based on single-photon sources and heralding measurements at a central station placed between the two parties. We derive conditions to attain non-zero secret-key rates in terms of the the photon efficiency, indistinguishability and the second order autocorrelation function of the single-photon sources. Exploiting new results on the security bound of such protocols allows us to reduce the requirements on the physical parameters of the setup. Our analysis shows that in the considered schemes, key rates of several hundreds of secret bits per second are within reach at distances of several tens of kilometers.
