{
  "annotation_id": "f2f1afac-297f-43a7-8fe0-5dbdd286f56c",
  "date_created": "2026-03-02T18:01:42.590000Z",
  "date_modified": "2026-03-02T18:01:42.590000Z",
  "file_hash": "f8aee63e2c1eb68edb9a1c91bddbc5fb464925417a7c7b43136af924bab990ca",
  "private": false,
  "record": {
    "abstract": "The fidelity of quantum cloning is very often limited by the accompanying\nunwanted transitions. We show how the fidelity can be improved by using a\ncoherent field to cycle away the unwanted transitions. We demonstrate this\nexplicitly in the context of the model of Simon {\\it et al.} [J. Mod. Opt. {\\bf\n47}, 233 (2000) ; Phys. Rev. Lett. {\\bf 84}, 2993 (2000)]. We also investigate\nthe effects of the number of atoms on the quality of quantum cloning. We show\nthat the universality of the scheme can be maintained by choosing the cycling\nfield according to the input state of the qubit.",
    "arxiv_id": "quant-ph/0010035",
    "authors": [
      "Shubhrangshu Dasgupta",
      "G. S. Agarwal"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.022315",
    "journal_ref": "Phys. Rev. A, 64, 022315 (2001)",
    "title": "Improving the Fidelity of Quantum Cloning by Fast Cycling away the   Unwanted Transition",
    "url": "https://arxiv.org/abs/quant-ph/0010035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "918f4d0f-ca65-4fb6-ab49-2e7dcebee157",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}