Object detection and rangefinding with quantum states using simple detection

• URL: http://arxiv.org/abs/2307.10785v3
• Date: Sun, 6 Aug 2023 21:51:44 GMT
• Title: Object detection and rangefinding with quantum states using simple detection
• Authors: Richard J. Murchie, Jonathan D. Pritchard, John Jeffers
• Abstract summary: We present a theoretical framework for analysing coincident multi-shot data with simple detectors. We quantify the advantage of quantum over classical illumination when performing target discrimination in a noisy thermal environment.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In a noisy environment with weak single levels, quantum illumination can outperform classical illumination in determining the presence and range of a target object even in the limit of sub-optimal measurements based on non-simultaneous, phase-insensitive coincidence counts. Motivated by realistic experimental protocols, we present a theoretical framework for analysing coincident multi-shot data with simple detectors. This approach allows for the often-overlooked non-coincidence data to be included, as well as providing a calibration-free threshold for inferring the presence and range of an object, enabling a fair comparison between different detection regimes. Our results quantify the advantage of quantum over classical illumination when performing target discrimination in a noisy thermal environment, including estimating the number of shots required to detect a target with a given confidence level.

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