{
  "annotation_id": "e45efa8b-ccf3-46c2-9bdd-2ea17e35ffff",
  "date_created": "2026-03-02T18:01:49.268000Z",
  "date_modified": "2026-03-02T18:01:49.268000Z",
  "file_hash": "6ae5f14db016bc165bd89a2411613c883126869dcec7628297cce393fe5dc763",
  "private": false,
  "record": {
    "abstract": "We estimate an unknown qubit from the long sequence of n random polarization\nmeasurements of precision Delta. Using the standard Ito-stochastic equations of\nthe aposteriori state in the continuous measurement limit we calculate the\nadvancement of fidelity. We show that the standard optimum value 2/3 is\nachieved asymptotically for n \u003e\u003e Delta^2 / 96 \u003e\u003e 1. We append a brief\nderivation of novel Ito-equations for the estimate state.",
    "arxiv_id": "quant-ph/0202052",
    "authors": [
      "Lajos Diosi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/35/12/311",
    "journal_ref": "J.Phys. A35 (2002) 2867-2875",
    "title": "Advancement of estimation fidelity in continuous quantum measurement",
    "url": "https://arxiv.org/abs/quant-ph/0202052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "88c9a9d8-1eaf-494f-9c59-8ba5465d122b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}