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arXiv · 2407.03980

Practical asynchronous measurement-device-independent quantum key distribution with advantage distillation

Di Luo·Xin Liu·Kaibiao Qin·Zhenrong Zhang·Kejin Wei
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Abstract

The advantage distillation (AD) method has proven effective in improving the performance of quantum key distribution (QKD). In this paper, we introduce the AD method into a recently proposed asynchronous measurement-device-independent (AMDI) QKD protocol, taking finite-key effects into account. Simulation results show that the AD method significantly enhances AMDIQKD, e.g., extending the transmission distance by 16 km with a total pulse count of N = 7.24*10^13, and enables AMDI-QKD, previously unable to generate keys, to generate keys with a misalignment error rate of 10%. As the AD method can be directly integrated into the current system through refined post-processing, our results facilitate the practical implementation of AMDI-QKD in various applications, particularly in scenarios with high channel losses and misalignment errors.

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Di Luo, Xin Liu, Kaibiao Qin, Zhenrong Zhang, Kejin Wei. 2024-07-04. Practical asynchronous measurement-device-independent quantum key distribution with advantage distillation. https://arxiv.org/abs/2407.03980

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