{
  "annotation_id": "9897a478-c975-48ea-9daf-61c082f271da",
  "date_created": "2026-03-02T18:02:13.740000Z",
  "date_modified": "2026-03-02T18:02:13.740000Z",
  "file_hash": "d6a25850ee179a0278550cfd40cc4e419f49001ef65b91f0144fcafe3cc83ecf",
  "private": false,
  "record": {
    "abstract": "We investigate the influence of environmental noise on polarization entangled\nlight generated by parametric emission in a cavity. By adopting a recently\ndeveloped separability criterion, we show that: i) self-stimulation may\nsuppress the detrimental influence of noise on entanglement; ii) when\nself-stimulation becomes effective, a classical model of parametric emission\nincorporating noise provides the same results of quantum theory for the\nexpectation values involved in the separability criterion. Moreover we show\nthat, in the macroscopic limit, it is impossible to observe violations of local\nrealism with measurements of $n$-particle correlations, whatever n but finite.\nThese results provide an interesting example of the emergence of macroscopic\nlocal realism in the presence of strong entanglement even in the absence of\ndecoherence.",
    "arxiv_id": "quant-ph/0502067",
    "authors": [
      "S. Portolan",
      "O. Di Stefano",
      "S. Savasta",
      "F. Rossi",
      "R. Girlanda"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.020101",
    "title": "Decoherence-Free Emergence of Macroscopic Local Realism for entangled   photons in a cavity",
    "url": "https://arxiv.org/abs/quant-ph/0502067"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "db0ec15e-1a9e-49fc-a63a-f264a4a630ca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}