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In order to enhance LIDAR performance metrics such as target detectionsensitivity, noise resilience and ranging accuracy, we exploit the strongtemporal correlation within the photon pairs generated in continuous-wavepumped semiconductor waveguides. The enhancement attained through the use ofsuch non-classical sources is measured and compared to a corresponding targetdetection scheme based on simple photon-counting detection. The performances ofboth schemes are quantified by the estimation uncertainty and Fisherinformation of the probe photon transmission, which is a widely adopted sensingfigure of merit. The target detection experiments are conducted with high probechannel loss (\(\simeq 1-5\times10^{-5}\)) and formidable environment noise upto 36 dB stronger than the detected probe power of \(1.64\times 10^{-5}\) pW.The experimental result shows significant advantages offered by the enhancedscheme with up to 26.3 dB higher performance in terms of estimationuncertainty, which is equivalent to a reduction of target detection time by afactor of 430 or 146 (21.6 dB) times more resilience to noise. We alsoexperimentally demonstrated ranging with these non-classical photon pairsgenerated with continuous-wave pump in the presence of strong noise and loss,achieving \(\approx\)5 cm distance resolution that is limited by the temporalresolution of the detectors.

Enhancing LIDAR performance metrics using continuous-wave photon-pair sources