{
  "annotation_id": "29c59d58-4415-4892-82ac-846f402410f7",
  "date_created": "2026-03-02T18:02:41.238000Z",
  "date_modified": "2026-03-02T18:02:41.238000Z",
  "file_hash": "efb087e570b78ce114bbff3a7130799c7ee0760e6173689e3c0c194ff1ca1284",
  "private": false,
  "record": {
    "abstract": "In this paper, new methodology -- direct approach -- for the determination of\nthe attainable CR type bound of the pure state model, is proposed and\nsuccessfully applied to the wide variety of pure state models, for example, the\n2-dimensional arbitrary model, the coherent model with arbitrary dimension.\nWhen the weight matrix is $SLD$ Fisher information, the bound is determined for\narbitrary pure state models. Manifestation of complex structure in the\nCramer-Rao type bound is also discussed.",
    "arxiv_id": "quant-ph/9711008",
    "authors": [
      "Keiji matsumoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/35/13/307",
    "journal_ref": "J.Phys.A35:3111-3124,2002",
    "title": "A new approach to the Cramer-Rao type bound of the pure state model",
    "url": "https://arxiv.org/abs/quant-ph/9711008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e1af1469-aacb-4912-ac33-d7e636ec3ec4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}