{
  "annotation_id": "7407a13e-7dde-4ab6-9e4f-75abfd9aa507",
  "date_created": "2026-03-02T18:01:53.047000Z",
  "date_modified": "2026-03-02T18:01:53.047000Z",
  "file_hash": "7556a007bfdef31bb816af4f31202663799a51da11b5d29803deb35e25fe9579",
  "private": false,
  "record": {
    "abstract": "Extended phase-matching conditions for spontaneous parametric down-conversion\nare examined. By augmenting the conventional phase-matching conditions, they\npermit the creation of a class of frequency-entangled states that generalizes\nthe usual twin-beam biphoton state. An experimental characterization of these\nstates is possible through interferometric coincidence counting.",
    "arxiv_id": "quant-ph/0207009",
    "authors": [
      "Vittorio Giovannetti",
      "Lorenzo Maccone",
      "Jeffrey H. Shapiro",
      "Franco N. C. Wong"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.043813",
    "journal_ref": "Phys. Rev. A 66, 043813 (2002)",
    "title": "Extended phase-matching conditions for improved entanglement generation",
    "url": "https://arxiv.org/abs/quant-ph/0207009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "88829563-64e2-4ffd-9a68-81470e6e86a5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}