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arXiv · 1402.2053

Quantum key distribution based on quantum dimension and independent devices

Hong-Wei Li·Zhen-Qiang Yin·Wei Chen·Shuang Wang·Guang-Can Guo·Zheng-Fu Han
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Abstract

In this paper, we propose a quantum key distribution (QKD) protocol based on only a two-dimensional Hilbert space encoding a quantum system and independent devices between the equipment for state preparation and measurement. Our protocol is inspired by the fully device-independent quantum key distribution (FDI-QKD) protocol and the measurement-device-independent quantum key distribution (MDI-QKD) protocol. Our protocol only requires the state to be prepared in the two dimensional Hilbert space, which weakens the state preparation assumption in the original MDI-QKD protocol. More interestingly, our protocol can overcome the detection loophole problem in the FDI-QKD protocol, which greatly limits the application of FDI-QKD. Hence our protocol can be implemented with practical optical components.

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Hong-Wei Li, Zhen-Qiang Yin, Wei Chen, Shuang Wang, Guang-Can Guo, Zheng-Fu Han. 2014-03-07. Quantum key distribution based on quantum dimension and independent devices. https://doi.org/10.1103/physreva.89.032302

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