{
  "annotation_id": "d1b7be3a-b3ce-4174-bc9f-544286ac31cb",
  "date_created": "2026-03-02T18:01:39.265000Z",
  "date_modified": "2026-03-02T18:01:39.265000Z",
  "file_hash": "ab077026a5776b13f24f6b28dfe017e9f18f9960d276da9792e2ef9dc4db6fc6",
  "private": false,
  "record": {
    "abstract": "We show that universally covariant cloning is not optimal for achieving joint\nmeasurements of noncommuting observables with minimum added noise. For such a\npurpose a cloning transformation that is covariant with respect to a restricted\ntransformation group is needed.",
    "arxiv_id": "quant-ph/0009080",
    "authors": [
      "G. M. D\u0027Ariano",
      "M. F. Sacchi"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "\"Quantum Communication, Measurement and Computing 3\", O. Hirota\n  and P. Tombesi, eds., Kluwer Acad./Plenum Publ., New York 2001, p. 159",
    "title": "Quantum cloning optimal for joint measurements",
    "url": "https://arxiv.org/abs/quant-ph/0009080"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "37b9d066-b016-45f4-bbd0-8285a6a4df82",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}