{
  "id": "1906.02258",
  "version": "v1",
  "published": "2019-06-05T19:07:21.000Z",
  "updated": "2019-06-05T19:07:21.000Z",
  "title": "Calibration of free-space and fiber-coupled single-photon detectors",
  "authors": [
    "Thomas Gerrits",
    "Alan Migdall",
    "Joshua C. Bienfang",
    "John Lehman",
    "Sae Woo Nam",
    "Jolene Splett",
    "Igor Vayshenker",
    "Jack Wang"
  ],
  "categories": [
    "quant-ph",
    "physics.ins-det",
    "physics.optics"
  ],
  "abstract": "We measure the detection efficiency of single-photon detectors at wavelengths near 851 nm and 1533.6 nm. We investigate the spatial uniformity of one free-space-coupled single-photon avalanche diode and present a comparison between fusion-spliced and connectorized fiber-coupled single-photon detectors. We find that our expanded relative uncertainty for a single measurement of the detection efficiency is as low as 0.70 % for fiber-coupled measurements at 1533.6 nm and as high as 1.78 % for our free-space characterization at 851.7 nm. The detection-efficiency determination includes corrections for afterpulsing, dark count, and count-rate effects of the single-photon detector with the detection efficiency interpolated to operation at a specified detected count rate.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-06-05T19:07:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fiber-coupled single-photon detectors",
      "detection efficiency",
      "calibration",
      "free-space-coupled single-photon avalanche diode",
      "count rate"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}