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arXiv · 2009.09555

Measurement-device-independent quantum key distribution of multiple degrees of freedom of a single photon

Yu-Fei Yan·Lan Zhou·Wei Zhong·Yu-Bo Sheng
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Abstract

Measurement-device-independent quantum key distribution (MDI-QKD) provides us a powerful approach to resist all attacks at detection side. Besides the unconditional security, people also seek for high key generation rate, but MDI-QKD has relatively low key generation rate. In this paper, we provide an efficient approach to increase the key generation rate of MDI-QKD by adopting multiple degrees of freedom (DOFs) of single photons to generate keys. Compared with other high-dimension MDI-QKD protocols encoding in one DOF, our protocol is more flexible, for our protocol generating keys in independent subsystems and the detection failure or error in a DOF not affecting the information encoding in other DOFs. Based on above features, our MDI-QKD protocol may have potential application in future quantum communication field.

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Yu-Fei Yan, Lan Zhou, Wei Zhong, Yu-Bo Sheng. 2020-09-21. Measurement-device-independent quantum key distribution of multiple degrees of freedom of a single photon. https://doi.org/10.1007/s11467-020-1005-1

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