The new variant of measurement-device-independent quantum key distribution (MDI-QKD), asynchronous MDI-QKD or called mode-pairing MDI-QKD, offers similar repeater-like rate-loss scaling but has the advantage of simple technology implementation by exploiting an innovative post-measurement pairing technique. We herein present an evaluation of the practical aspects of decoy-state asynchronous MDI-QKD. To determine its effectiveness, we analyze the optimal method of decoy-state calculation and examine the impact of asymmetrical channels and multi-user networks. Our simulations show that, under realistic conditions, aynchronous MDI-QKD can furnish the highest key rate with MDI security as compared to other QKD protocols over distances ranging from 50 km to 480 km. At fiber distances of 50 km and 100 km, the key rates attain 6.02 Mbps and 2.29 Mbps respectively, which are sufficient to facilitate real-time one-time-pad video encryption. Our findings indicate that experimental implementation of asynchronous MDI-QKD in intercity networks can be both practical and efficient.
翻译：测量-独立量子键分配(MDI-QKD)的新型变式是非同步的MDI-QKD, 或称为模式调频的 MDI-QKD, 提供类似中继器的损率缩放比例,但具有简单的技术实施优势,利用创新的测量后配对技术。我们在此对诱变状态无同步MDI-QKD的实际方面进行评估。为了确定其有效性,我们分析了诱变状态的最佳计算方法,并审查了对称频道和多用户网络的影响。我们的模拟结果表明,在现实条件下,与其它QKD协议相比,在50公里至480公里的距离内,对MDI-QD提供最高的关键安全率。在50公里和100公里的距离内,关键率分别达到6.02 Mbps和2.29 Mbps,这足以促进实时一次性的视频加密。我们的研究结果表明,在现实的MDI-K-Q网络和内部网络中,可进行高效的实验性M-K-Q-Q-Q-Q-Q-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C-C</s>
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