{
  "annotation_id": "cdb5bea0-1a5f-4274-a36b-b1e5f906acb2",
  "date_created": "2026-03-02T18:01:00.749000Z",
  "date_modified": "2026-03-02T18:01:00.749000Z",
  "file_hash": "b5b92d1249647bfca171168b07f736cefeaa985c73214543560bc8cbc8125ab0",
  "private": false,
  "record": {
    "abstract": "Bell\u0027s theorem reveals contradictions between the predictions of quantum\nmechanics and the EPR postulates for a pair of particles only in situations\ninvolving imperfect statistical correlations. However, with three or more\nparticles, contradictions emerge even for perfect correlations. We describe an\nexperiment which can be realized in the laboratory, using four-photon entangled\nstates generated by parametric down-conversion, to demonstrate this\ncontradiction at the level of perfect correlations.",
    "arxiv_id": "physics/0506212",
    "authors": [
      "P. Hariharan",
      "J. Samuel",
      "Supurna Sinha"
    ],
    "categories": [
      "physics.optics",
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/1/2/002",
    "journal_ref": "Journal Of Optics B: Quantum and Semiclassical Optics, 1, 199\n  (1999)",
    "title": "Four-photon interference: a realizable experiment to demonstrate   violation of EPR postulates for perfect correlations",
    "url": "https://arxiv.org/abs/physics/0506212"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "981143a6-933f-4182-a2de-1cbb45092a5f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}