Enabling efficient quantum communications with adaptive optics

Noelia Martinez; Joan Torras; Angel Alonso; Carlos Magraso Santa; Iciar Montilla; Luis Fernando Rodriguez Ramos

doi:10.1117/12.2608420

4 March 2022 Enabling efficient quantum communications with adaptive optics

Noelia Martinez, Joan Torras, Angel Alonso, Carlos Magraso Santa, Iciar Montilla, Luis Fernando Rodriguez Ramos

Proceedings Volume 11993, Free-Space Laser Communications XXXIV; 119930L (2022) https://doi.org/10.1117/12.2608420
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

Superconducting nanowire detectors fed by single mode fibres are essential to minimize dark counts in a quantum communication receiver. Efficient coupling of the received light to the single mode fibre is fundamental for the system performance, but it gets deeply affected by the atmospheric turbulence. Adaptive Optics measure and correct for the atmosphere effect on the light optimising the fibre coupling. An Adaptive Optics system is proposed to be installed at the ground station that will receive quantum key distribution from a geostationary satellite. Numerical simulations have been performed for this scenario; the improvement in the fibre coupling have been assessed with and without atmospheric turbulence correction. The present paper encapsulates the simulation framework and main findings, showing the potential for this technology in the quantum communications niche.

Conference Presentation

Citation Download Citation

Noelia Martinez, Joan Torras, Angel Alonso, Carlos Magraso Santa, Iciar Montilla, and Luis Fernando Rodriguez Ramos "Enabling efficient quantum communications with adaptive optics", Proc. SPIE 11993, Free-Space Laser Communications XXXIV, 119930L (4 March 2022); https://doi.org/10.1117/12.2608420

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