Quantum Illumination with a Hetero-Homodyne Receiver and Sequential Detection
arXiv:2303.18207 · doi:10.1103/PhysRevApplied.20.014030
Abstract
We propose a hetero-homodyne receiver for quantum illumination (QI) target detection. Unlike prior QI receivers, it uses a cascaded positive operator-valued measurement (POVM) that does not require a quantum interaction between QI's returned radiation and its stored idler. When used without sequential detection its performance matches the 3 dB quantum advantage over optimum classical illumination (CI) that Guha and Erkmen's [Phys. Rev. A 80, 052310 (2009)] phase-conjugate and parametric amplifier receivers enjoy. When used in a sequential detection QI protocol, the hetero-homodyne receiver offers a 9 dB quantum advantage over a conventional CI radar, and a 3 dB advantage over a CI radar with sequential detection. Our work is a significant step forward toward a practical quantum radar for the microwave region, and, more generally, emphasizes the potential offered by cascaded POVMs for quantum radar.
arXiv comment12 pages, 5 figures
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Cited by in corpus (9)
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- Advances in Quantum Radar and Quantum LiDAR
- Quantum Illumination and Quantum Radar: A Brief Overview
- Heisenberg-Limited Quantum Lidar for Joint Range and Velocity Estimation
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- Not even 6 dB: Gaussian quantum illumination in thermal background
- Existence of unbiased resilient estimators in discrete quantum systems
- Quantum illumination via frequency-mode-based correlation-to-displacement conversion
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