Easing the experimental requirements of quantum illumination

Roberto Di Candia

doi:10.1117/12.3038035

15 November 2024 Easing the experimental requirements of quantum illumination

Roberto Di Candia

Author Affiliations +

Proceedings Volume 13202, Quantum Technologies for Defence and Security; 1320206 (2024) https://doi.org/10.1117/12.3038035
Event: Security + Defence, 2024, Edinburgh, United Kingdom

Abstract

Quantum illumination is one of the main paradigms for implementing quantum radar in the low-frequency spectrum. Here, we discuss how to ease the open-air application of the protocol. I first define an experimentally feasible receiver for an entangled signal-idler transmitter. This consists of measuring heterodyne the received signal and adaptively measuring homodyne the idler, reaching a maximal quantum advantage of 3 dB in the error probability exponent with respect to the optimal classical strategy. Our receiver requires only a single tunable JPA. To relax the bandwidth requirement at the transmitter level, we discuss a sequential protocol that uses patches of modes sequentially to probe the target region. We show that, in a practical scenario, the sequential protocol needs two orders of magnitude less bandwidth with respect to the non-sequential protocol, while keeping the same quantum advantage. We finally briefly discuss possible applications of quantum illumination for backscatter communication and covert communication.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Roberto Di Candia "Easing the experimental requirements of quantum illumination", Proc. SPIE 13202, Quantum Technologies for Defence and Security, 1320206 (15 November 2024); https://doi.org/10.1117/12.3038035

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