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arXiv · 1609.02648

Experimental asymmetric Plug-and-Play Measurement-device-independent quantum key distribution

Guang-Zhao Tang·Shi-Hai Sun·Feihu Xu·Huan Chen·Chun-Yan Li·Lin-Mei Liang
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Abstract

Measurement-device-independent quantum key distribution (MDI-QKD) is immune to all security loopholes on detection. Previous experiments on MDI-QKD required spatially separated signal lasers and complicated stabilization systems. In this paper, we perform a proof-of-principle experimental demonstration of plug-and-play MDI-QKD over an asymmetric channel setting with a single signal laser, in which the whole system is automatically stabilized in spectrum, polarization, arrival time and phase reference. Both the signal laser and the single-photon detectors are in the possession of a common server. A passive timing calibration technique is applied to ensure the precise and stable overlap of signal pulses. The results pave the way for the realization of a quantum network, in which the users only need the encoding devices.

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Guang-Zhao Tang, Shi-Hai Sun, Feihu Xu, Huan Chen, Chun-Yan Li, Lin-Mei Liang. 2016-09-09. Experimental asymmetric Plug-and-Play Measurement-device-independent quantum key distribution. https://doi.org/10.1103/physreva.94.032326

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