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28 January 2019 Fuzzy Greenberger–Horne–Zeilinger state analyzer and multiparty measurement-device-independent quantum key distribution network
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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.
© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$25.00 © 2019 SPIE
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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