Measuring photon correlation using imperfect detectors

Clark, Rachel N., Bishop, Sam G., Cannon, Joseph K., Hadden, John P. ORCID: https://orcid.org/0000-0001-5407-6754, Dolan, Philip R., Sinclair, Alastair G. and Bennett, Anthony J. ORCID: https://orcid.org/0000-0002-5386-3710 2024. Measuring photon correlation using imperfect detectors. Physical Review Applied 22 (6) , 064067. 10.1103/PhysRevApplied.22.064067

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Abstract

Single-photon detectors are “blind” after the detection of a photon, and thereafter display a characteristic recovery in efficiency, during which the number of undetected photons depends on the statistics of the incident light. We show how the efficiency recovery, photon statistics, and intensity have an interdependent relationship which suppresses a detector’s ability to count photons and measure correlations. We also demonstrate this effect with an experiment using n such detectors to determine the n⁢th-order correlation function with pseudothermal light.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	American Physical Society
Funders:	EPSRC, Cardiff University, National Physical Laboratory, UK government Department for Science, Innovation and Technology
Date of First Compliant Deposit:	19 November 2024
Date of Acceptance:	15 November 2024
Last Modified:	29 Jan 2025 11:21
URI:	https://orca.cardiff.ac.uk/id/eprint/174139

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