{
  "annotation_id": "5422bae1-eb1c-4031-a306-72debb5eb3b9",
  "date_created": "2026-03-02T18:01:45.341000Z",
  "date_modified": "2026-03-02T18:01:45.341000Z",
  "file_hash": "482c69eb085d80708a8c3977119421a2794f174a0b79504abd231afd2e75e0a6",
  "private": false,
  "record": {
    "abstract": "We present a local-hidden-variable model for positive-operator-valued\nmeasurements (an LHVPOV model) on a class of entangled generalized Werner\nstates, thus demonstrating that such measurements do not always violate a\nBell-type inequality. We also show that, in general, if the state $\\rho\u0027$ can\nbe obtained from $\\rho$ with certainty by local quantum operations without\nclassical communication then an LHVPOV model for the state $\\rho$ implies the\nexistence of such a model for $\\rho\u0027$.",
    "arxiv_id": "quant-ph/0107045",
    "authors": [
      "Jonathan Barrett"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.042302",
    "journal_ref": "Phys. Rev. A, 65, 042302 (2002)",
    "title": "Nonsequential positive-operator-valued measurements on entangled mixed   states do not always violate a Bell inequality",
    "url": "https://arxiv.org/abs/quant-ph/0107045"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4bcde13f-706b-4301-8eeb-2ea6f5ac9646",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}