Field trial of continuous variable quantum key distribution on trackside fibre

Rupesh Kumar; Bimal Nayar; Tim Lane; Tim Spiller

doi:10.1117/12.2647203

11 January 2023 Field trial of continuous variable quantum key distribution on trackside fibre

Rupesh Kumar, Bimal Nayar, Tim Lane, Tim Spiller

Proceedings Volume 12335, Quantum Technology: Driving Commercialisation of an Enabling Science III; 123350H (2023) https://doi.org/10.1117/12.2647203
Event: SPIE Photonex, 2022, Birmingham, United Kingdom

Abstract

We report the field trial of a Gaussian Modulated Coherent State (GMCS) Continuous Variable Quantum Key Distribution (CVQKD) system over 49.82km of railway trackside fibre. We have examined the effect of a moving train on the QKD system and implemented compensation methods, mainly for polarisation stabilization. The system generated 4kbps secure key, in the asymptotic limit, under the collective attacks. The CVQKD transmitter and receiver were deployed at the Rail Innovation and Development Centre (RIDC) at Melton Mowbray, UK, and remotely monitored and operated from the University of York, at York, UK.

Conference Presentation

Citation Download Citation

Rupesh Kumar, Bimal Nayar, Tim Lane, and Tim Spiller "Field trial of continuous variable quantum key distribution on trackside fibre", Proc. SPIE 12335, Quantum Technology: Driving Commercialisation of an Enabling Science III, 123350H (11 January 2023); https://doi.org/10.1117/12.2647203

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