{
  "annotation_id": "366a0fdb-7b20-4d8c-89a5-a7eab19e86b3",
  "date_created": "2026-03-02T18:02:06.397000Z",
  "date_modified": "2026-03-02T18:02:06.397000Z",
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  "record": {
    "abstract": "Correlations in twin beams composed of many photon pairs are studied using an\nintensified CCD camera. Joint signal-idler photon-number distribution and\nquantum phase-space quasi-distributions determined from experimental data have\nnonclassical features.",
    "arxiv_id": "quant-ph/0405118",
    "authors": [
      "Ondrej Haderka",
      "Jan Perina Jr",
      "Martin Hamar",
      "Jan Perina"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.033815",
    "journal_ref": "Physical Review A 71, 033815 (2005)",
    "title": "Direct measurement and reconstruction of nonclassical features of twin   beams generated in spontaneous parametric down-conversion",
    "url": "https://arxiv.org/abs/quant-ph/0405118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "51a7127d-579e-48da-b2d0-aa8b761b7e96",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}