{
  "annotation_id": "2cf55b9f-24bc-497f-aefd-ec8831a0fd84",
  "date_created": "2026-03-02T18:02:10.383000Z",
  "date_modified": "2026-03-02T18:02:10.383000Z",
  "file_hash": "38e9c1dacdbe03127ea4ed664bed5dfdf971ce490251858fc83662d12aa8625e",
  "private": false,
  "record": {
    "abstract": "We consider cloning transformations of d-dimensional states of the form\ne^{i\\phi_0}|0\u003e + e^{i\\phi_1}|1\u003e +...+ e^{i\\phi_{d-1}}|d-1\u003e that are covariant\nwith respect to rotations of the phases \\phi_i\u0027s. The optimal cloning maps are\neasily obtained using a well-defined general characterization of\nstate-dependent 1 -\u003e 2 cloning transformations in arbitrary dimensions. Our\nresults apply to symmetric as well as asymmetric cloners, so that the balance\nbetween the fidelity of the two clones can be analyzed.",
    "arxiv_id": "quant-ph/0410054",
    "authors": [
      "L. -P. Lamoureux",
      "N. J. Cerf"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Quantum Information and Computation - Vol. 5, No. 1 (2005) 032-039",
    "title": "Asymmetric phase-covariant d-dimensional cloning",
    "url": "https://arxiv.org/abs/quant-ph/0410054"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6839bd60-bc21-455a-8974-1c6c6ead0663",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}