{
  "annotation_id": "6175c967-f10d-46bb-b295-cfc1e43b9a0c",
  "date_created": "2026-03-02T18:01:38.081000Z",
  "date_modified": "2026-03-02T18:01:38.081000Z",
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  "record": {
    "abstract": "We discuss single adaptive measurements for the estimation of mixed quantum\nstates of qubits. The results are compared to the optimal estimation schemes\nusing collective measurements. We also demonstrate that the advantage of\ncollective measurements increases when the degree of mixing of the quantum\nstates increases.",
    "arxiv_id": "quant-ph/0005090",
    "authors": [
      "Dietmar G. Fischer",
      "Matthias Freyberger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(00)00513-2",
    "journal_ref": "Phys. Lett. A 273, 293 (2000)",
    "title": "Estimating mixed quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0005090"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "486a1fba-79ee-4a5d-9be4-ac1c4755f22f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}