Easing the experimental requirements of quantum illumination
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A4 Artikkeli konferenssijulkaisussa
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2024
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en
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5
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Quantum Technologies for Defence and Security, Proceedings of SPIE - The International Society for Optical Engineering ; Volume 13202
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.Description
Publisher Copyright: © 2024 SPIE.
Keywords
backscatter communication, covert communication, quantum illumination, quantum metrology, quantum parameter estimation, quantum radar, Remote quantum sensing
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Citation
Di Candia, R 2024, Easing the experimental requirements of quantum illumination . in G Sorelli, S Ducci & S Schwartz (eds), Quantum Technologies for Defence and Security ., 1320206, Proceedings of SPIE - The International Society for Optical Engineering, vol. 13202, SPIE, Quantum Technologies for Defence and Security, Edinburgh, United Kingdom, 17/09/2024 . https://doi.org/10.1117/12.3038035