{
  "annotation_id": "c32d1b74-9f53-4726-bf7d-f1760eb7c31a",
  "date_created": "2026-03-02T18:02:17.213000Z",
  "date_modified": "2026-03-02T18:02:17.213000Z",
  "file_hash": "d49eb8157e00bac198b9390949256911fa26573d8ad61a863f0ace3c3ad3a19d",
  "private": false,
  "record": {
    "abstract": "Nonlocality of two-mode states of light is addressed by means of CHSH\ninequality based on displaced on/off photodetection. Effects due to non-unit\nquantum efficiency and nonzero dark counts are taken into account. Nonlocality\nof both balanced and unbalanced superpositions of few photon-number states, as\nwell as that of multiphoton twin beams, is investigated. We find that\nunbalanced superpositions show larger nonlocality than balanced one when noise\naffects the photodetection process. De-Gaussification by means of\n(inconclusive) photon subtraction is shown to enhance nonlocality of twin beams\nin the low energy regime. We also show that when the measurement is described\nby a POVM, rather than a set of projectors, the maximum achievable value of the\nBell parameter in the CHSH inequality is decreased, and is no longer given by\nthe Cirel\u0027son bound.",
    "arxiv_id": "quant-ph/0507057",
    "authors": [
      "Carmen Invernizzi",
      "Stefano Olivares",
      "Matteo G. A. Paris",
      "Konrad Banaszek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.042105",
    "journal_ref": "Phys. Rev. A 72, 042105 (2005).",
    "title": "Effect of noise and enhancement of nonlocality in on/off photodetection",
    "url": "https://arxiv.org/abs/quant-ph/0507057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7a3963fd-adf5-4830-b79d-f870d17dadff",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}