Fully Passive Measurement-Device-Independent Quantum Key Distribution

• URL: http://arxiv.org/abs/2309.07673v2
• Date: Wed, 6 Dec 2023 02:29:27 GMT
• Title: Fully Passive Measurement-Device-Independent Quantum Key Distribution
• Authors: Jinjie Li, Wenyuan Wang, Hoi-Kwong Lo
• Abstract summary: We show a numerical simulation of the passive MDI-QKD, and we obtain an acceptable key rate while getting much better implementation security. We have proved that a fully passive protocol is compatible with MDI-QKD and we also proposed a novel idea that could potentially improve the sifting efficiency.
• Score: 5.6168844664788855
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A recently proposed fully passive QKD removes all source modulator side channels. In this work, we combine the fully passive sources with MDI-QKD to remove simultaneously side channels from source modulators and detectors. We show a numerical simulation of the passive MDI-QKD, and we obtain an acceptable key rate while getting much better implementation security, as well as ease of implementation, compared with a recently proposed fully passive TF-QKD, paving the way towards more secure and practical QKD systems. We have proved that a fully passive protocol is compatible with MDI-QKD and we also proposed a novel idea that could potentially improve the sifting efficiency.

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