Simple 2.5 GHz time-bin quantum key distribution

Published 15 Apr 2018 in quant-ph | (1804.05426v1)

Abstract: We present a 2.5 GHz quantum key distribution setup with the emphasis on a simple experimental realization. It features a three-state time-bin protocol based on a pulsed diode laser and a single intensity modulator. Implementing an efficient one-decoy scheme and finite-key analysis, we achieve record breaking secret key rates of 1.5 kbps over 200 km of standard optical fiber.

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