Free-space time-bin encoded quantum key distribution from near- to mid-infrared wavelengths

• URL: http://arxiv.org/abs/2508.13008v1
• Date: Mon, 18 Aug 2025 15:28:22 GMT
• Title: Free-space time-bin encoded quantum key distribution from near- to mid-infrared wavelengths
• Authors: Claudia De Lazzari, Tecla Gabbrielli, Natalia Bruno, Francesco Cappelli, Domenico Ribezzo, Nicola Biagi, Nicola Corrias, Simone Borri, Mario Siciliani de Cumis, Paolo De Natale, Davide Bacco, Alessandro Zavatta,
• Abstract summary: We investigate Free-Space Quantum Communication and explore the advantage of implementing Quantum Key Distribution (QKD)<n>We simulate time-bin encoded quantum key distribution and demonstrate that a free-space QKD link operating in the Mid-infrared outperforms configurations based on conventional near-infrared wavelengths under various weather scenarios.
• Score: 31.114245664719455
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum technologies play a central role in establishing new ways of quantum-secured communication. We investigate Free-Space Quantum Communication and explore the advantage of implementing Quantum Key Distribution (QKD) with weak coherent states produced by a light source in the Mid-Infrared (>3$\mu$m). We simulate time-bin encoded quantum key distribution and demonstrate that a free-space QKD link operating in the Mid-infrared outperforms configurations based on conventional near-infrared wavelengths under various weather scenarios, with a particular significance in adverse meteorological conditions.

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