Free‐Space Time‐Bin Encoded Quantum Key Distribution from Near‐ to Mid‐Infrared Wavelengths

Advanced Quantum Technologies 2026 Open access

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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
DOI: 10.1002/qute.202500867
Cited by: 1
References: 96

Abstract

ABSTRACT Quantum technologies play a central role in establishing new ways of quantum‐secured communication. This work investigates free‐space quantum communication and explores the advantage of implementing quantum key distribution (QKD) with weak coherent states produced by a light source in the mid‐infrared (). Time‐bin encoded quantum key distribution is simulated, and it is demonstrated 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.

Fields of Study & Subjects

Quantum Information and Cryptography Quantum optics and atomic interactions Photonic and Optical Devices

Publication details

Journal / source
Advanced Quantum Technologies
Publisher
Wiley
Volume
9
Issue
4
Publication date
1 April 2026
Language
EN