{
  "annotation_id": "c8ef5353-bb82-4f35-a655-24369b5a9772",
  "date_created": "2026-03-02T18:01:59.865000Z",
  "date_modified": "2026-03-02T18:01:59.865000Z",
  "file_hash": "98fdd52e4f5dd027c5cf08c398ad5c7771d253d6d949a6de29e1dbf88fb26323",
  "private": false,
  "record": {
    "abstract": "The problem of discriminating with minimum error between two mixed quantum\nstates is reviewed, with emphasize on the detection operators necessary for\nperforming the measurement. An analytical result is derived for the minimum\nprobability of errors in deciding whether the state of a quantum system is\neither a given pure state or a uniform statistical mixture of any number of\nmutually orthogonal states. The result is applied to two-qubit states, and the\nminimum error probabilities achievable by collective and local measurements on\nthe qubits are compared.",
    "arxiv_id": "quant-ph/0307038",
    "authors": [
      "Ulrike Herzog"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/6/3/005",
    "title": "Minimum-error discrimination between a pure and a mixed two-qubit state",
    "url": "https://arxiv.org/abs/quant-ph/0307038"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9b48591f-c2a2-4720-a657-6f60393707f4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}