{
  "annotation_id": "a2eeb038-a873-4d69-8654-dc9bff32d859",
  "date_created": "2026-03-02T18:01:56Z",
  "date_modified": "2026-03-02T18:01:56Z",
  "file_hash": "d3fc9bd0022d234c7602bcca862c9340023323456cf933dc0f17eee4f2acd926",
  "private": false,
  "record": {
    "abstract": "We consider cloning transformations of equatorial qubits and qutrits, with\nthe transformation covariant for rotation of the phases. The optimal cloning\nmaps are derived without simplifying assumptions from first principles, for any\nnumber of input and output qubits, and for a single input qutrit and any number\nof output qutrits. We also compare the cloning maps for global and single\nparticle fidelities, and we show that the two criteria lead to different\noptimal maps.",
    "arxiv_id": "quant-ph/0301175",
    "authors": [
      "G. M. D\u0027Ariano",
      "C. Macchiavello"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.042306",
    "title": "Optimal phase covariant cloning for qubits and qutrits",
    "url": "https://arxiv.org/abs/quant-ph/0301175"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e74dfb8c-4c1b-4271-b06f-004aa01a6897",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}