{
  "annotation_id": "3f3755d4-f69e-4ff7-bdaa-d950ac623667",
  "date_created": "2026-03-02T18:02:27.115000Z",
  "date_modified": "2026-03-02T18:02:27.115000Z",
  "file_hash": "c713105b8a7adc389f088009a962b6d413be51651cf5262d2e9df3e1bcf35499",
  "private": false,
  "record": {
    "abstract": "We present two methods for determining the absolute detection efficiency of\nphoton-counting detectors directly from their singles rates under illumination\nfrom a nonclassical light source. One method is based on a continuous variable\nanalogue to coincidence counting in discrete photon experiments, but does not\nactually rely on high detector time resolutions. The second method is based on\ndifference detection which is a typical detection scheme in continuous variable\nquantum optics experiments. Since no coincidence detection is required with\neither method, they are useful for detection efficiency measurements of photo\ndetectors with detector time resolutions far too low to resolve coincidence\nevents.",
    "arxiv_id": "quant-ph/0606041",
    "authors": [
      "Michael Lindenthal",
      "Johannes Kofler"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/AO.45.006059",
    "journal_ref": "Appl. Opt. 45, 6059 (2006)",
    "title": "Measuring the absolute photo detection efficiency using photon number   correlations",
    "url": "https://arxiv.org/abs/quant-ph/0606041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fbba4fe1-c1ac-4eb3-b787-7dbee43c7c91",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}