{
  "annotation_id": "ffee95c7-f055-4cf6-9b74-935cf8730860",
  "date_created": "2026-03-02T18:02:37.802000Z",
  "date_modified": "2026-03-02T18:02:37.802000Z",
  "file_hash": "72a12559446f11ae9d887e659664580a4d5245b2712b645e128343c2682f580b",
  "private": false,
  "record": {
    "abstract": "New algorithm for quantum state estimation based on the maximum likelihood\nestimation is proposed. Existing techniques for state reconstruction based on\nthe inversion of measured data are shown to be overestimated since they do not\nguarantee the positive definiteness of the reconstructed density matrix.",
    "arxiv_id": "quant-ph/9609012",
    "authors": [
      "Zdenek Hradil"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.55.R1561",
    "title": "Quantum state estimation",
    "url": "https://arxiv.org/abs/quant-ph/9609012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "55d1ae52-088d-4e53-988b-699cf0ee5a5f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}