{
  "annotation_id": "5e88ca7c-382f-4a49-a30c-b387082f3e15",
  "date_created": "2026-03-02T18:01:42.595000Z",
  "date_modified": "2026-03-02T18:01:42.595000Z",
  "file_hash": "a7625945a6031f2b35d0093e77333f87c07d2e0b57448f06cd352ea96d47e174",
  "private": false,
  "record": {
    "abstract": "We show how polarisation measurements on the output fields generated by\nparametric down conversion will reveal a violation of multi-particle Bell\ninequalities, in the regime of both low and high output intensity. In this case\neach spatially separated system, upon which a measurement is performed, is\ncomprised of more than one particle. In view of the formal analogy with spin\nsystems, the proposal provides an opportunity to test the predictions of\nquantum mechanics for spatially separated higher spin states. Here the quantum\nbehaviour possible even where measurements are performed on systems of large\nquantum (particle) number may be demonstrated. Our proposal applies to both\nvacuum-state signal and idler inputs, and also to the quantum-injected\nparametric amplifier as studied by De Martini et al. The effect of detector\ninefficiencies is included.",
    "arxiv_id": "quant-ph/0104139",
    "authors": [
      "M. D. Reid",
      "W. J. Munro",
      "F. De Martini"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.033801",
    "journal_ref": "Phys. Rev. A 66, 033801 (2002)",
    "title": "Violation of multi-particle Bell inequalities for low and high flux   parametric amplification using both vacuum and entangled input states",
    "url": "https://arxiv.org/abs/quant-ph/0104139"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1d7cb58a-aac4-4bb4-96f5-c22178f88ef6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}