{
  "annotation_id": "ad2f88b3-bea7-4d41-b35c-a6e1e7455304",
  "date_created": "2026-03-02T18:02:41.165000Z",
  "date_modified": "2026-03-02T18:02:41.165000Z",
  "file_hash": "05bb1b28221189c65281cd061211703f5f005bd5d13b2e30e543f3fe3164e865",
  "private": false,
  "record": {
    "abstract": "We present Quantum Cloning Machines (QCM) that transform N identical qubits\ninto $M\u003eN$ identical copies and we prove that the fidelity (quality) of these\ncopies is optimal. The connection between cloning and measurement is discussed\nin detail. When the number of clones M tends towards infinity, the fidelity of\neach clone tends towards the optimal fidelity that can be obtained by a\nmeasurement on the input qubits. More generally, the QCM are universal devices\nto translate quantum information into classical information.",
    "arxiv_id": "quant-ph/9705046",
    "authors": [
      "N. Gisin",
      "S. Massar"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.79.2153",
    "journal_ref": "Phys.Rev.Lett.79:2153-2156,1997",
    "title": "Optimal Quantum Cloning Machines",
    "url": "https://arxiv.org/abs/quant-ph/9705046"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9711a7ca-b794-4f84-8a2c-2492347246b4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}