Overcoming the Rate-Loss Limit without Global Phase Tracking

Lai Zhou,Jinping Lin,Yuan-Mei Xie,Yu-Shuo Lu,Yumang Jing,Hua-Lei Yin,Zhiliang Yuan

2023 Conference on Lasers and Electro-Optics (CLEO)（2023）

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摘要

We achieve a finite-size key rate of 42.64bps over 508km fibers, breaking the fundamental rate-loss limit of point-point quantum key distribution (QKD), via implementing an innovative measurement-device-independent QKD through asynchronous coincidence pairing.

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