{
  "annotation_id": "cef70f04-37e9-479a-a548-48e64fa91033",
  "date_created": "2026-03-02T18:02:41.665000Z",
  "date_modified": "2026-03-02T18:02:41.665000Z",
  "file_hash": "c7f6c29e23c0b82b82ae5a2f7a0876f5a1eb5013faa60b8e39aef444c689134e",
  "private": false,
  "record": {
    "abstract": "We present a universal algorithm for the optimal quantum state estimation of\nan arbitrary finite dimensional system. The algorithm specifies a physically\nrealizable positive operator valued measurement (POVM) on a finite number of\nidentically prepared systems. We illustrate the general formalism by applying\nit to different scenarios of the state estimation of N independent and\nidentically prepared two-level systems (qubits).",
    "arxiv_id": "quant-ph/9707028",
    "authors": [
      "Radoslav Derka",
      "Vladimir Buzek",
      "Artur Ekert"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.80.1571",
    "journal_ref": "Phys.Rev.Lett. 80 (1998) 1571-1575",
    "title": "Universal Algorithm for Optimal Estimation of Quantum States from Finite   Ensembles",
    "url": "https://arxiv.org/abs/quant-ph/9707028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "afc38643-d2c8-470a-9aaf-88823e0e37a5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}