{
  "annotation_id": "7c90ed05-3137-4a3c-8063-5730d596dd62",
  "date_created": "2026-03-02T18:02:30.920000Z",
  "date_modified": "2026-03-02T18:02:30.920000Z",
  "file_hash": "fe1ef39eed4eed3bab411821e87c84b742c96d17437eca025776956aea8e023d",
  "private": false,
  "record": {
    "abstract": "Any physical transformation that equally distributes quantum information over\na large number M of users can be approximated by a classical broadcasting of\nmeasurement outcomes. The accuracy of the approximation is at least of the\norder 1/M. In particular, quantum cloning of pure and mixed states can be\napproximated via quantum state estimation. As an example, for optimal qubit\ncloning with 10 output copies, a single user has error probability p \u003e 0.45 in\ndistinguishing classical from quantum output--a value close to the error\nprobability of the random guess.",
    "arxiv_id": "quant-ph/0608007",
    "authors": [
      "G. Chiribella",
      "G. M. D\u0027Ariano"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.250503",
    "journal_ref": "Phys. Rev. Lett. 97, 250503 (2006)",
    "title": "Quantum information becomes classical when distributed to many users",
    "url": "https://arxiv.org/abs/quant-ph/0608007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c33d8f63-2fac-4e5b-9fa6-b80bf34fe14b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}