Microwave quantum illumination with correlation-to-displacement conversion

• DOI: 10.48550/arxiv.2303.18206
• Publication Date: 2023-01-01
• Authors: Jacopo Angeletti; Haowei Shi; Theerthagiri Laks...; David Vitali; Quntao Zhuang
• Keywords: Quantum Physics; FOS: Physical sciences; Quantum Physics (quant-ph)

Entanglement is vulnerable to degradation in a noisy sensing scenario, but surprisingly, the quantum illumination protocol has demonstrated that its advantage can survive. However, designing measurement system realizes this challenging since information hidden weak correlation embedded noise at receiver side. Recent progress correlation-to-displacement conversion module provides route towards an optimal for practical microwave illumination. In work, we extend accommodate experimental imperfections are ubiquitous systems. To mitigate loss, propose amplification of return signals. case ideal amplification, entire six-decibel error-exponent target detection error be maintained. reduced three-decibel. We analyze under different scenarios with Kennedy final measurement. case, performance still achieves one over fairly large range only on-off detection. Empowered by photon number resolving detectors, further improved and also analyzed terms operating characteristic curves. Our findings pave way development