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QI: Fachverband Quanteninformation
QI 14: Quantum Information Poster Session
QI 14.8: Poster
Mittwoch, 11. März 2026, 18:00–21:00, P4
Noise mitigation in microwave quantum key distribution using single-photon detection — •Jasmine Frijters1,2, Ivan Solomakhin1,2, Simon Gandorfer1,2, Wun Kwan Yam1,2, Maria-Teresa Handschuh1,2, Achim Marx1, and Kirill G. Fedorov1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 2School of Natural Sciences, Technical University of Munich, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany
Quantum key distribution (QKD) is a cryptographic protocol that allows for the unconditionally secure exchange of secret keys between two parties. While QKD implementations in the optical domain are rapidly developing toward practical applications, we analyse a continuous-variable microwave QKD protocol that utilizes single-photon detection to increase the secure transmission distance in both direct and reverse reconciliation schemes. In view of current experimental capabilities for microwave QKD, we predict an increase of up to 80% in secure transmission distance and estimate a key distribution of more than 300 m.
Keywords: quantum information processing; quantum cryptography; quantum key distribution; quantum communication