{
  "annotation_id": "9b08341e-b2d5-4ea9-a136-56670a0e5d7b",
  "date_created": "2026-03-02T18:01:48.285000Z",
  "date_modified": "2026-03-02T18:01:48.285000Z",
  "file_hash": "db01b2d5f961a1dabac5d160e4bc7eedc524a5dff4948411f612b0960b08143d",
  "private": false,
  "record": {
    "abstract": "The invariant information introduced by Brukner and Zeilinger, Phys. Rev.\nLett. 83, 3354 (1999), is reconsidered from the point of view of quantum state\nestimation. We show that it is directly related to the mean error of the\nstandard reconstruction from the measurement of a complete set of mutually\ncomplementary observables. We give its generalization in terms of the Fisher\ninformation. Provided that the optimum reconstruction is adopted, the\ncorresponding quantity loses its invariant character.",
    "arxiv_id": "quant-ph/0111115",
    "authors": [
      "J. Rehacek",
      "Z. Hradil"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.88.130401",
    "journal_ref": "PRL (88) 130401 (2002)",
    "title": "Invariant information and quantum state estimation",
    "url": "https://arxiv.org/abs/quant-ph/0111115"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4c7718d0-bac6-4053-b645-2381417d368b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}