{
  "annotation_id": "020427be-c313-49d1-954f-d5f60a7496cf",
  "date_created": "2026-03-02T18:02:19.827000Z",
  "date_modified": "2026-03-02T18:02:19.827000Z",
  "file_hash": "478f78539e83cdbbe99251c9d628436541ee520c1ea1078561efb5985540d464",
  "private": false,
  "record": {
    "abstract": "We show that unitarity does not allow cloning of any two points in a ray.\nThis has implication for cloning of the geometric phase information in a\nquantum state. In particular, the quantum history which is encoded in the\ngeometric phase during cyclic evolution of a quantum system cannot be copied.\nWe also prove that the generalized geometric phase information cannot be copied\nby a unitary operation. We argue that our result also holds in the consistent\nhistory formulation of quantum mechanics.",
    "arxiv_id": "quant-ph/0507248",
    "authors": [
      "Arun K. Pati"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/j.physleta.2005.08.041",
    "title": "Quantum History cannot be Copied",
    "url": "https://arxiv.org/abs/quant-ph/0507248"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "481b4167-54bc-4413-90fe-9963fd492542",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}