Object detection and range finding with quantum states using simple detection

Murchie, Richard J. and Pritchard, Jonathan D. and Jeffers, John (2024) Object detection and range finding with quantum states using simple detection. Physical Review Applied, 21 (6). 064008. ISSN 2331-7043 (https://doi.org/10.1103/PhysRevApplied.21.064008)

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Abstract

The task of sensing the presence of a target object using a weak light source is challenging when the object is embedded in a noisy environment. One possibility is to use quantum illumination to do this, as it can outperform classical illumination in determining the object presence and range. This advantage persists even when both classical and quantum illumination are restricted to identical suboptimal object-detection measurements based on nonsimultaneous, phase-insensitive coincidence counts. Motivated by realistic experimental protocols, we present a theoretical framework for analyzing coincident multishot data with simple detectors. This approach allows for the often-overlooked noncoincidence data to be included, as well as providing a calibration-free threshold for inferring an object’s presence and range, 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.

ORCID iDs

Pritchard, Jonathan D. ORCID: https://orcid.org/0000-0003-2172-7340

Jeffers, John ORCID: https://orcid.org/0000-0002-8573-1675

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• Item metadata

  Item type:	Article
  ID code:	89235
  Dates:	Date Event 5 June 2024 Published 5 June 2024 Published Online 8 May 2024 Accepted
  Subjects:	Science > Physics Science > Physics > Optics. Light
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	15 May 2024 14:15
  Last modified:	19 Dec 2024 01:35
  URI:	https://strathprints.strath.ac.uk/id/eprint/89235