Asymmetric Quantum Illumination with three-mode Gaussian State

TL;DR

This paper explores asymmetric quantum illumination using a three-mode Gaussian state, demonstrating improved detection performance over traditional two-mode states when the signal photon number is low.

Contribution

It introduces a novel three-mode Gaussian state approach for quantum illumination, showing enhanced performance in low-photon regimes compared to existing two-mode methods.

Findings

Less-error probability achieved with three-mode state for N_S < 0.46

Demonstrates advantage of asymmetric strategy in quantum illumination

Provides theoretical analysis of three-mode Gaussian state performance

Abstract

Quantum illumination with asymmetric strategy is examined by making use of the three-mode maximally entangled Gaussian state, which involves one signal and two idler beams. It is shown that this scenario gives less-error probability compared to that with the two-mode squeezed vacuum state when $N_S$, average photon number per signal, is less than $0.46$.