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Effect of Pulse-shape Mismatch on the Security of Measurement-device-independent QKD Protocols
Date Issued
01-01-2022
Author(s)
Ranu, Shashank Kumar
Prabhakar, Anil
Mandayam, Prabha
Abstract
Pulse-width mismatch, primarily caused by channel asymmetry, affects the visibility of Hong-Ou-Mandel (HOM) interference. We show that a channel asymmetry of 176.5 km reduces HOM visibility to 0.37, rendering a polarization-based MDI-QKD protocol completely insecure.