Phase self-aligned continuous-variable measurement-device-independent quantum key distribution

Abstract

Continuous-variable measurement-independent-device quantum key distribution (CV-MDI-QKD) can offer high secure key rate at metropolitan distance and remove all side channel loopholes of detection as well. However, there is no complete experimental demonstration of CV-MDI-QKD due to the remote distance phase-locking techniques challenge. Here, we present a new optical scheme to overcome this difficulty and also removes the requirement of two identical independent lasers. We anticipate that our new scheme can be used to demonstrate the in-field CV-MDI-QKD experiment and build the CV-MDI-QKD network with untrusted source.

arXiv comment26 pages, 3 figures

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• Advances in Quantum Cryptography
• Automated machine learning for secure key rate in discrete-modulated continuous-variable quantum key distribution
• Neural network-based prediction of the secret-key rate of quantum key distribution
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