Entanglement-assisted multi-aperture pulse-compression radar for angle resolving detection
Bo-Han Wu, Saikat Guha, Quntao Zhuang

TL;DR
This paper introduces a quantum radar scheme using entangled microwave pulses with dual receivers to enhance angle resolution of distant objects, showing significant improvements over classical methods in short-range, high-frequency scenarios.
Contribution
It proposes a novel entanglement-assisted multi-aperture radar method for angle detection, extending quantum advantages beyond range estimation.
Findings
Entanglement improves angle resolution significantly.
The scheme is effective in short-range, high-frequency applications.
Quantum radar outperforms classical counterparts under similar conditions.
Abstract
Entanglement has been known to boost target detection, despite it being destroyed by lossy-noisy propagation. Recently, [Phys. Rev. Lett. 128, 010501 (2022)] proposed a quantum pulse-compression radar to extend entanglement's benefit to target range estimation. In a radar application, many other aspects of the target are of interest, including angle, velocity and cross section. In this study, we propose a dual-receiver radar scheme that employs a high time-bandwidth product microwave pulse entangled with a pre-shared reference signal available at the receiver, to investigate the direction of a distant object and show that the direction-resolving capability is significantly improved by entanglement, compared to its classical counterpart under the same parameter settings. We identify the applicable scenario of this quantum radar to be short-range and high-frequency, which enables…
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Taxonomy
TopicsQuantum Information and Cryptography · Quantum Computing Algorithms and Architecture · Cold Atom Physics and Bose-Einstein Condensates
