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18 December 2023 The adverse effects of practical passive optical network on continuous-variable quantum key distribution downstream access networks
Luyu Huang, Ziyang Chen, Xiangyu Wang, Song Yu
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Proceedings Volume 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics; 1296321 (2023) https://doi.org/10.1117/12.3006343
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China
Abstract
An quantum access network, connecting multiple end users and a backbone network in a scalable and cost-effective way with tree or star structures, is suitable to combine with continuous-variable quantum key distribution for network security. Under the realistic condition, in a passive optical network in optical distribution network achieved by a practical passive beam splitter, it is hard to divide the signal into 1/n parts evenly. To well quantify the impact of the imperfection, we modify the formula for secret key rate calculation with the imperfection effect and conduct numerical simulations. The results indicate that if the communication parties neglect this imperfection, Eve can attack the entire network and attain information without the parties’ awareness.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Luyu Huang, Ziyang Chen, Xiangyu Wang, and Song Yu "The adverse effects of practical passive optical network on continuous-variable quantum key distribution downstream access networks", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 1296321 (18 December 2023); https://doi.org/10.1117/12.3006343
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KEYWORDS
Quantum networks
Network security
Imperfections
Transmittance
Information security
Continuous variable quantum key distribution
Quantum security
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