Quantum Radar Cross Section with two-photon entangled states

Abstract:We study two-photon entangled states for quantum radar cross section (QRCS), which is an extension of a single-photon QRCS formula. Since signal-idler entanglement does not provide any enhancement of the QRCS [Brandsema's PhD Thesis (2017)], we focus on signal-signal entanglement and derive the corresponding biphoton QRCS. We show that it can provide an enhancement over the single-photon QRCS and two-photon separable QRCS, where the performance is evaluated for various two-dimensional target geometries in monostatic/bistatic configurations. Furthermore, using the double-Gaussian approximation, we derive QRCS formula for biphoton states with arbitrary degree of entanglement and compute the resulting scattering patterns.

arXiv:2606.05603 [quant-ph]

(or arXiv:2606.05603v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2606.05603 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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