Advanced key management in switched QKD networks with non-optimized QKD links

George T. Kanellos; Konstantinos Christodoulopoulos; Iliana Tsoni; Alkinoos Papageorgopoulos; Nikolaos Makris; Persefoni Konteli; Dimitris Syvridis

doi:10.1117/12.3001469

13 March 2024 Advanced key management in switched QKD networks with non-optimized QKD links

George T. Kanellos, Konstantinos Christodoulopoulos, Iliana Tsoni, Alkinoos Papageorgopoulos, Nikolaos Makris, Persefoni Konteli, Dimitris Syvridis

Author Affiliations +

Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC129110I (2024) https://doi.org/10.1117/12.3001469
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

In this work, we investigate non-optimized QKD links between arbitrary pairs of Alices and Bobs using off-the-shelf Toshiba QKD devices. Performance variation is observed when connecting unmatched Alices and Bobs, resulting in significantly lower average secret key rates compared to matched pairs. To address this, a novel algorithm is proposed to dynamically balance key consumption rates and optimize the weighted sum of key generation rates while considering system constraints. The evaluation highlights the potential for reducing the required number of QKD pairs from ~N^2 to ~N by utilizing a dynamically switched QKD network.

Conference Presentation

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George T. Kanellos, Konstantinos Christodoulopoulos, Iliana Tsoni, Alkinoos Papageorgopoulos, Nikolaos Makris, Persefoni Konteli, and Dimitris Syvridis "Advanced key management in switched QKD networks with non-optimized QKD links", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC129110I (13 March 2024); https://doi.org/10.1117/12.3001469

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