{
  "annotation_id": "cbcc7688-0c02-405a-acb3-07c3616927da",
  "date_created": "2026-03-02T18:02:48.117000Z",
  "date_modified": "2026-03-02T18:02:48.117000Z",
  "file_hash": "6ce7d10a45cb41b0bdb3b8c2b9216785a5aeffb0838bf54b07c048e70871f193",
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  "record": {
    "abstract": "A nonclassical feature of the fourth-order interference at a beam splitter,\nthat genuine photon spin singlets are emitted in predetermined directions even\nwhen incident photons are unpolarized, has been used in a proposal for an\nexperiment that imposes quantum spin correlation on truly independent photons.\nIn the experiment, two photons from two such singlets interfere at a beam\nsplitter, and as a result the other two photons - which nowhere interacted and\nwhose paths nowhere crossed - exhibit a 100% correlation in polarization, even\nwhen no polarization has been measured in the first two photons. The propsed\nexperiment permits closure of the remaining loopholes in the Bell theorem proof\nand reveals the quantum nonlocality as a property of selection, and pioneers an\nexperimental procedure for exact preparation of unequal superposition.",
    "arxiv_id": "quant-ph/9908024",
    "authors": [
      "Mladen Pavicic"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/JOSAB.12.000821",
    "journal_ref": "J. Opt. Soc. Am. B, 12 (1995) 821-828",
    "title": "Spin-correlated interferometry with beam splitters: preselection of   spin-correlated photons",
    "url": "https://arxiv.org/abs/quant-ph/9908024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "da36dcc6-23fb-4e5a-a9cd-7c7fa72fce28",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}