{
  "annotation_id": "f05a568a-de76-49ea-a0c7-81c513c216b9",
  "date_created": "2026-03-02T18:01:46.069000Z",
  "date_modified": "2026-03-02T18:01:46.069000Z",
  "file_hash": "cadc14f0e1dbf14cbfee9618fb916a4268a2cb011371f77012d37351046eb769",
  "private": false,
  "record": {
    "abstract": "A generalized universal quantum cloning machine is proposed which allows the\ninput to be arbitrary states in symmetric subspace. And it reduces to the\nuniversal quantum cloning machine (UQCM) if the input are identical pure\nstates. The generalized cloner is optimal in the sense we compare the input and\noutput reduced density operators at a single qubit. The result for qubits is\nextended to arbitrary-dimensional states.",
    "arxiv_id": "quant-ph/0107113",
    "authors": [
      "Heng Fan",
      "Keiji Matsumoto",
      "Xiang-Bin Wang",
      "Hiroshi Imai",
      "Miki Wadati"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "A universal cloner allowing the input to be arbitrary states in   symmetric subspace",
    "url": "https://arxiv.org/abs/quant-ph/0107113"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "39a3bf63-64f9-4e41-9954-11ced67483ca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}