{
  "annotation_id": "5d1be0e9-4ca3-4d2a-9dd8-1ead3d2382a0",
  "date_created": "2026-03-02T18:02:17.087000Z",
  "date_modified": "2026-03-02T18:02:17.087000Z",
  "file_hash": "ce56801e17707fdf9d92f7a3420ef37d3c0e753b39f30f534ce3372c33d18999",
  "private": false,
  "record": {
    "abstract": "We propose a new scheme for measuring the quantum efficiency of photon\ncounting detectors by using correlated pho-tons. The measurement technique is\nbased on a 90 rotation of the polarization of one photon member of a correlated\npair produced by parametric down-conversion, conditioned on the detection of\nthe other correlated photon after polarization selection. We present\nexperimental results obtained with this scheme.",
    "arxiv_id": "quant-ph/0506166",
    "authors": [
      "Giorgio Brida",
      "Maria Chekhova",
      "Marco Genovese",
      "Marco Gramegna",
      "Leonid Krivitsky",
      "Maria Luisa Rastello"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 54, NO.\n  2, APRIL 2005, pag. 898",
    "title": "Absolute Quantum Efficiency Measurements by Means of Conditioned   Polarization Rotation",
    "url": "https://arxiv.org/abs/quant-ph/0506166"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a05134e5-f729-4fe1-aa86-0731f006abf1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}