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Data of the manuscript "QKD protected fiber-based infrastructure for time dissemination"

Salvatore Virzì

Published Mar 7, 2025• 0 citations
Publisher

Abstract

Frequency stability comparison between decrypted and encrypted white-rabbit transmission measurements.
DOI
10.5281/zenodo.14990280

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In this study, we demonstrate the possibility to protect, with Quantum Key Distribution (QKD), a critical infrastructure as the fiber-based one used for time and frequency (TF) dissemination service. The proposed technique allows to disseminate secure and precise TF signals between two fiber-optic-connected locations, on a critical infrastructure, using both QKD and White Rabbit technique. This secure exchange enables the secret sharing of time information between two parties, allowing the synchronization of distant clocks with a stability of [Formula: see text] at 1 s, traceable to the Italian time scale. When encrypted, the time signals provide no useful information to a third party regarding the synchronization status, resulting in a time stability degraded by two orders of magnitude.
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