Towards a standard procedure for the measurement of the multi-photon component in a CW telecom heralded single-photon source

Single-photon sources are set to be a fundamental tool for metrological applications as well as for quantum information related technologies. Because of their upcoming widespread dissemination, the need for their characterization and standardization is becoming of the utmost importance. Here, we ill...

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Bibliographic Details
Published inMetrologia Vol. 56; no. 2; pp. 25004 - 25010
Main Authors Rebufello, E, Piacentini, F, López, M, Kirkwood, R A, Ruo Berchera, I, Gramegna, M, Brida, G, Kück, S, Chunnilall, C J, Genovese, M, Degiovanni, I P
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
Atoms & subatomic particles
Autocorrelation functions
Measurement
Photons
quantum characterization
Quantum phenomena
quantum technologies
Quantum theory
single-photon sources
Standardization
Telecommunications
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Summary:Single-photon sources are set to be a fundamental tool for metrological applications as well as for quantum information related technologies. Because of their upcoming widespread dissemination, the need for their characterization and standardization is becoming of the utmost importance. Here, we illustrate a strategy to provide a quantitative estimate of the multi-photon component of a single-photon source, showing the results achieved in a pilot study for the measurement of the second-order autocorrelation function g(2)(0) of a low-noise CW heralded single photon source prototype (operating at telecom wavelength nm) realized in INRiM. The results of this pilot study, involving INRiM, NPL and PTB, will help to build a robust and unambiguous procedure for the characterization of the emission of a single-photon source.
Bibliography:MET-101296.R1
Bureau International des Poids et Mesures
ISSN:0026-1394
1681-7575
DOI:10.1088/1681-7575/ab022e