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Photon-counting distribution for arrays of single-photon detectors
KTH, School of Engineering Sciences (SCI), Applied Physics.ORCID iD: 0000-0001-8488-9035
KTH, School of Engineering Sciences (SCI), Applied Physics.
2020 (English)In: Physical Review A: covering atomic, molecular, and optical physics and quantum information, ISSN 2469-9926, E-ISSN 2469-9934, Vol. 101, no 1, article id 013815Article in journal (Refereed) Published
Abstract [en]

We derive a computationally efficient expression of the photon-counting distribution for a uniformly illuminated array of single-photon detectors. The expression takes the number of single detectors, their quantum efficiency, and their dark count rate into account. Using this distribution we compute the error of the array detector by comparing the output to that of an ideal detector. We conclude from the error analysis that the quantum efficiency must be very high in order for the detector to resolve a handful of photons with high probability. Furthermore, we conclude that in the worst-case scenario the required array size scales quadratically with the number of photons that should be resolved. We also simulate a temporal array and investigate how large the error is for different parameters, and we compute the optimal size of the array that yields the smallest error.

Place, publisher, year, edition, pages
American Physical Society, 2020. Vol. 101, no 1, article id 013815
Keywords [en]
Number-Resolving Detector, Transition-Edge Sensors, Efficiency
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-267243DOI: 10.1103/PhysRevA.101.013815ISI: 000507493100010Scopus ID: 2-s2.0-85078184970OAI: oai:DiVA.org:kth-267243DiVA, id: diva2:1391614
Note

QC 20200206

Available from: 2020-02-05 Created: 2020-02-05 Last updated: 2020-02-06Bibliographically approved

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Jönsson, MattiasBjörk, Gunnar
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