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Publication Citation: High Accuracy Verification of a Correlated-Photon-Based Method for Determining Photon-Counting Detection Efficiency

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Author(s): Sergey V. Polyakov; Alan L. Migdall;
Title: High Accuracy Verification of a Correlated-Photon-Based Method for Determining Photon-Counting Detection Efficiency
Published: February 19, 2007
Abstract: We have implemented and characterized an independent primary standard method for the calibration of detection efficiency of photon counting detectors. The method is based on a light source producing correlated photon pairs. We have determined, and most importantly, verified the detection efficiency uncertainty associated with this implementation of the two-photon method by comparing the measured efficiency to a detection efficiency determined by a substitution method using a conventionally calibrated transfer detector tied to a national primary standard detector, the NIST High Accuracy Cryogenic Radiometer. We obtained an absolute uncertainty of the correlated method of 0.18% (k=1) and an uncertainty of the conventional calibration of 0.17% (k=1). From a series of measurements we found that the two independent calibration techniques differ by 0.15% b0.14%, within the established uncertainty of comparison. We believe that this is the highest accuracy verification of the two-photon method yet achieved. We describe procedures and techniques used to perform calibrations and comparisons. Also presented are procedures for determining uncertainties of the both calibration methods.
Citation: Optics Express
Volume: 15
Issue: 4
Pages: pp. 1390 - 1407
Keywords: correlated photons;detector;down-conversion;high accuracy calibration;primary standard verification;single photon detector
Research Areas: Single Photon Detectors, Correlated Photon Radiometry, Physics, Quantum Information Technology, Quantum Physics
PDF version: PDF Document Click here to retrieve PDF version of paper (198KB)