Fuzzy Greenberger–Horne–Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network

Litao Zhang; Min Hu; Pan Ran; Hanyu Zeng; Jun Li; Banghong Guo

doi:10.1117/1.OE.58.1.016113

28 January 2019 Fuzzy Greenberger–Horne–Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network

Litao Zhang, Min Hu, Pan Ran, Hanyu Zeng, Jun Li, Banghong Guo

Author Affiliations +

Optical Engineering, Vol. 58, Issue 1, 016113 (January 2019). https://doi.org/10.1117/1.OE.58.1.016113

Abstract

Greenberger–Horne–Zeilinger (GHZ) state is an essential resource in quantum processing. We propose multiparty measurement-device-independent quantum key distribution (MDI-QKD) protocol based on a fuzzy GHZ state analyzer, which is composed of linear optical components. Our scheme requires only N detectors and N − 1 polarizing beam splitters to realize an N-party MDI-QKD network. From numerical simulations, the security communication distance is improved to 300 km, and key rate is determined to be higher than 10^− 14. Compared with the previous work, our scheme needs less optical components and detectors, is easier to extend more users, and narrows the gap between theory and practice in multiparty MDI-QKD network.

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Litao Zhang, Min Hu, Pan Ran, Hanyu Zeng, Jun Li, and Banghong Guo "Fuzzy Greenberger–Horne–Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network," Optical Engineering 58(1), 016113 (28 January 2019). https://doi.org/10.1117/1.OE.58.1.016113

Received: 14 June 2018; Accepted: 3 January 2019; Published: 28 January 2019

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