{
  "annotation_id": "eae2837c-3fd0-4628-a104-cca8f3f62def",
  "date_created": "2026-03-02T18:02:45.191000Z",
  "date_modified": "2026-03-02T18:02:45.191000Z",
  "file_hash": "5616cc6ac5154b511b0d41ccfcb7fa59ec73cc567be7e7e5a2349185260a79d5",
  "private": false,
  "record": {
    "abstract": "We propose an experiment demonstrating the nonlocality of a quantum\nsinglet-like state generated from a single photon incident on a beam splitter.\nEach of the two spatially separated apparatuses in the setup performs a\nstrongly unbalanced homodyning, employing a single photon counting detector. We\nshow that the correlation functions violating the Bell inequalities in the\nproposed experiment are given by the joint two-mode Q-function and the Wigner\nfunction of the optical singlet-like state. This establishes a direct\nrelationship between two intriguing aspects of quantum mechanics: the\nnonlocality of entangled states and the noncommutativity of quantum\nobservables, which underlies the nonclassical structure of phase space\nquasidistribution functions.",
    "arxiv_id": "quant-ph/9806068",
    "authors": [
      "Konrad Banaszek",
      "Krzysztof Wodkiewicz"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.82.2009",
    "journal_ref": "Phys. Rev. Lett. 82, 2009 (1999)",
    "title": "Quantum Nonlocality in Phase Space",
    "url": "https://arxiv.org/abs/quant-ph/9806068"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "05a0ea91-2586-47e1-9a5d-497b91e6061f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}