{
  "annotation_id": "7027e320-f841-4ec4-9b25-648c02b56401",
  "date_created": "2026-03-02T18:02:48.315000Z",
  "date_modified": "2026-03-02T18:02:48.315000Z",
  "file_hash": "1a445aa49947d8678705ee01aa6229c0da71da81ae3132f558615f7d74495670",
  "private": false,
  "record": {
    "abstract": "Two approaches to extend Hardy\u0027s proof of nonlocality without inequalities to\nmaximally entangled states of bipartite two-level systems are shown to fail. On\none hand, it is shown that Wu and co-workers\u0027 proof [Phys. Rev. A 53, R1927\n(1996)] uses an effective state which is not maximally entangled. On the other\nhand, it is demonstrated that Hardy\u0027s proof cannot be generalized by the\nreplacement of one of the four von Neumann measurements involved in the\noriginal proof by a generalized measurement to unambiguously discriminate\nbetween non-orthogonal states.",
    "arxiv_id": "quant-ph/9911023",
    "authors": [
      "Adan Cabello"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.61.022119",
    "journal_ref": "Phys. Rev. A 61 (2000) 022119",
    "title": "Nonlocality without inequalities has not been proved for maximally   entangled states",
    "url": "https://arxiv.org/abs/quant-ph/9911023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d4004985-7b27-4ea3-9919-bb0d121470b7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}