Managing backscattering noise in Sagnac-loop twin-field quantum key distribution

Reem Mandil; Li Qian; Hoi-Kwong Lo; Hoi-Kwong Lo; Hoi-Kwong Lo

doi:10.1364/CLEO_AT.2021.JTu3A.43

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper JTu3A.43
•https://doi.org/10.1364/CLEO_AT.2021.JTu3A.43

Managing backscattering noise in Sagnac-loop twin-field quantum key distribution

Reem Mandil, Li Qian, and Hoi-Kwong Lo

CLEO: QELS_Fundamental Science 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Joint Poster Session I (JTu3A)

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R. Mandil, L. Qian, and H. Lo, "Managing backscattering noise in Sagnac-loop twin-field quantum key distribution," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper JTu3A.43.

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Abstract

We propose a signal patterning technique to mitigate backscattering and optimize secure key rates for Sagnac twin-field QKD systems. Simulation results based on experimentally-measured backscattering coefficient yield positive key rates for 250km using APD detectors.

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