Real-time quantum key distribution over an emulated satellite to ground link

Chithrabhanu Perumangatt; Thomas Roger; Ravinder Singh; Mirko Sanzaro; Davide Marangon; Peter R. Smith; Robert Woodward; Andrew J. Shields

doi:10.1117/12.3000968

13 March 2024 Real-time quantum key distribution over an emulated satellite to ground link

Chithrabhanu Perumangatt, Thomas Roger, Ravinder Singh, Mirko Sanzaro, Davide Marangon, Peter R. Smith, Robert Woodward, Andrew J. Shields

Author Affiliations +

Proceedings Volume PC12911, Quantum Computing, Communication, and Simulation IV; PC129110B (2024) https://doi.org/10.1117/12.3000968
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Real-time generation of quantum keys between satellite and ground nodes is essential for a scalable and global quantum network. We report the development of a QKD system that operate at gigahertz clock rate with multiplexed classical and quantum channels. This system is tested on a free-space link which is an emulation of the satellite to ground link with dynamic loss and random misalignments. With the assumption of a small satellite in low Earth orbit and a ground station with moderate aperture, we demonstrate the generation of >5 Mbits of quantum keys in a single emulated satellite pass.

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Citation Download Citation

Chithrabhanu Perumangatt, Thomas Roger, Ravinder Singh, Mirko Sanzaro, Davide Marangon, Peter R. Smith, Robert Woodward, and Andrew J. Shields "Real-time quantum key distribution over an emulated satellite to ground link", Proc. SPIE PC12911, Quantum Computing, Communication, and Simulation IV, PC129110B (13 March 2024); https://doi.org/10.1117/12.3000968

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