{
  "annotation_id": "7cf94730-6cb1-4ea6-adcd-01a4639d9ae6",
  "date_created": "2026-03-02T18:02:30.556000Z",
  "date_modified": "2026-03-02T18:02:30.556000Z",
  "file_hash": "c541040c3a3fe26bf17fb52cf00fc7efea15d8a6717f0e379b8713011da9c9ac",
  "private": false,
  "record": {
    "abstract": "We extend the validity of Hardy\u0027s nonlocality without inequalities proof to\ncover the case of special one-parameter classes of non-pure statistical\noperators. These mixed states are obtained by mixing the Hardy states with a\ncompletely chaotic noise or with a colored noise and they represent a realistic\ndescription of imperfect preparation processes of (pure) Hardy states in\nnonlocality experiments. Within such a framework we are able to exhibit a\nprecise range of values of the parameter measuring the noise affecting the\nnon-optimal preparation of an arbitrary Hardy state, for which it is still\npossible to put into evidence genuine nonlocal effects. Equivalently, our work\nexhibits particular classes of bipartite mixed states whose constituents do not\nadmit any local and deterministic hidden variable model reproducing the quantum\nmechanical predictions.",
    "arxiv_id": "quant-ph/0610247",
    "authors": [
      "GianCarlo Ghirardi",
      "Luca Marinatto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.062107",
    "journal_ref": "Phys. Rev. A 74, 062107 (2006)",
    "title": "Hardy\u0027s proof of nonlocality in the presence of noise",
    "url": "https://arxiv.org/abs/quant-ph/0610247"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5e1a1345-ca20-4480-a826-403cb9d91f28",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}