Plug-and-play measurement-device-independent quantum key distribution

Yujun Choi, Osung Kwon, Minki Woo, Kyunghwan Oh, Sang Wook Han, Yong Su Kim, Sung Moon

Research output: Contribution to journalArticle

18 Citations (Scopus)


Quantum key distribution (QKD) guarantees unconditional communication security based on the laws of quantum physics. However, practical QKD suffers from a number of quantum hackings due to the device imperfections. From the security standpoint, measurement-device-independent quantum key distribution (MDI-QKD) is in the limelight since it eliminates all the possible loopholes in detection. Due to active control units for mode matching between the photons from remote parties, however, the implementation of MDI-QKD is highly impractical. In this paper, we propose a method to resolve the mode matching problem while minimizing the use of active control units. By introducing the plug-and-play (P&P) concept into MDI-QKD, the indistinguishability in spectral and polarization modes between photons can naturally be guaranteed. We show the feasibility of P&P MDI-QKD with a proof-of-principle experiment.

Original languageEnglish
Article number032319
JournalPhysical Review A
Issue number3
Publication statusPublished - 2016 Mar 14

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Choi, Y., Kwon, O., Woo, M., Oh, K., Han, S. W., Kim, Y. S., & Moon, S. (2016). Plug-and-play measurement-device-independent quantum key distribution. Physical Review A, 93(3), [032319].