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12 July 2023 Hybrid BBM92 approach for GEOQKD: lab implementation and future perspectives
Bob P. Dirks, Gustavo Castro do Amaral, David Bakker, Luca Mazzarella, Ivan Ferrario, Sander Kossen, Michiel Marcus, B. Perlingeiro Corrêa, Hemant Sharma, Alessandro Le Pera, Daniele Vito Finocchiaro, Martina Ottavi, Noemi Scaiella, Gabriele Riccardi
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Proceedings Volume 12777, International Conference on Space Optics — ICSO 2022; 1277724 (2023) https://doi.org/10.1117/12.2689968
Event: International Conference on Space Optics — ICSO 2022, 2022, Dubrovnik, Croatia
Abstract
Quantum Key Distribution (QKD) is the most mature quantum technology, having achieved on-ground applications and commercially available products. In this domain, satellite platforms are essential to achieve a communication range reaching the intercontinental scale, acting thus as enablers for the future global quantum internet operation. This paper will report on the main results of the TNO-Eutelsat-TAS Italy project aiming to evaluate a novel hybrid approach for improved QKD performance particularly suited for geostationary orbits (GEO); the Dutch TKI HTSM sponsors the overall activity. We will present the results of lab-based tests of a novel QKD free-space approach that simultaneously implements the BBM92 protocol in both trusted and trust-free mode, following a joint Eutelsat-TNO patent. The trust-free mode between two ground receivers is the standard BBM92 protocol that uses entangled photons and there is no need for further security assumptions on the satellite payload. In trusted mode operation, one of the two entangled photons is measured directly on board. Key material is generated between ground and satellite. Security measures will be needed in the space segment, which therefore needs to be trusted. Further, we will present a demonstration roadmap aiming at free space field test to validate loss and key rate models for a free space link up to 2.5km in one of the arms. We also present a perspective on potential future GEO-based quantum applications beyond QKD. Additional presentation content can be accessed on the supplemental content page.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Bob P. Dirks, Gustavo Castro do Amaral, David Bakker, Luca Mazzarella, Ivan Ferrario, Sander Kossen, Michiel Marcus, B. Perlingeiro Corrêa, Hemant Sharma, Alessandro Le Pera, Daniele Vito Finocchiaro, Martina Ottavi, Noemi Scaiella, and Gabriele Riccardi "Hybrid BBM92 approach for GEOQKD: lab implementation and future perspectives", Proc. SPIE 12777, International Conference on Space Optics — ICSO 2022, 1277724 (12 July 2023); https://doi.org/10.1117/12.2689968
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KEYWORDS
Quantum entanglement
Photons
Quantum key distribution
Satellites
Visibility
Polarization
Astronomical imaging
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