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Radiometry & few-photon metrology at the National Research Council of Canada

Par Conseil national de recherches du Canada

Autre titreRadiometry and few-photon metrology at the National Research Council of Canada
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AuteurRechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher : 2; Rechercher : 3
Affiliation
  1. Conseil national de recherches du Canada. Centre de recherche en métrologie
  2. Conseil national de recherches du Canada. Électronique et photonique avancées
  3. Conseil national de recherches du Canada. Technologies de sécurité et de rupture
FormatTexte, Allocution
ConférenceCalcon 2018 - Conference on Characterization and Radiometric Calibration for Remote Sensing, June 18-21, 2018, Utah State University, Utah
Résumé
Over the last few years, the National Research Council of Canada (NRC) has been establishing new facilities and improving capabilities in three areas of radiometry: optical power, spectral irradiance, and few-photon measurements. Canada’s realization of the optical radiant power scale now utilizes a new cryogenic electrical substitution radiometer as the primary instrument. With higher cavity absorptance, reduced non-equivalence effects, and a closed-cycle helium cryocooler, this new cryogenic radiometer has significantly contributed to improvements in measurement uncertainties. NRC’s primary spectral irradiance scale has transitioned from a detector based approach to a detector and source based realization. Filter radiometers with spectral responsivity traceable to the cryogenic radiometer and a high temperature blackbody primary light source are implemented in the calibration of transfer standard FEL lamps from 200 nm to 2500 nm. Most recently, NRC has been working to establish a few-photon metrology capability for optical radiometry. The initial goal of this new facility is to measure the detection efficiency of free-space single-photon detectors using a calibrated detector substitution technique. This capability will then be extended to the traceable characterization of NRC on-chip semiconductor quantum dot-based single-photon sources, the evaluation of these sources as new quantum standards, and using entangled photons from these sources for fundamental quantum metrology measurements. Ongoing efforts and details of these new radiometry facilities will be presented.
Date de publication
Maison d’éditionNational Research Council of Canada
Langueanglais
Publications évaluées par des pairsOui
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Identificateur de l’enregistrementbc26ee1c-56b6-4e31-b812-f9b4e1195696
Enregistrement créé2020-01-28
Enregistrement modifié2022-06-09
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