Time-dependent Side Channels in Quantum Key Distribution

Amita Gnanapandithan; Eli Bourassa; Li Qian; Li Qian; Hoi-Kwong Lo; Hoi-Kwong Lo; Hoi-Kwong Lo; Hoi-Kwong Lo

doi:10.1364/CLEO_AT.2021.JTu3A.180

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper JTu3A.180
•https://doi.org/10.1364/CLEO_AT.2021.JTu3A.180

Time-dependent Side Channels in Quantum Key Distribution

Amita Gnanapandithan, Eli Bourassa, Li Qian, and Hoi-Kwong Lo

CLEO: Science and Innovations 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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A. Gnanapandithan, E. Bourassa, L. Qian, and H. Lo, "Time-dependent Side Channels in 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.180.

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Abstract

Time-dependent side channels pose a security risk for quantum key distribution (QKD). We apply a numerical security proof technique to study such a side-channel, which we identify in a common source implementation for measurement-device-independent QKD employing Faraday mirrors.

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