{
  "annotation_id": "4e0d6a43-03b8-4e45-a7b3-6797248654b9",
  "date_created": "2026-03-02T18:01:49.284000Z",
  "date_modified": "2026-03-02T18:01:49.284000Z",
  "file_hash": "2c1205bf418a4f3ef0baa0b6e6d5d1cc656d2cb9675aa55a49ba6c5f1fc2cd10",
  "private": false,
  "record": {
    "abstract": "The optimal entanglement manipulation for a single copy of mixed states of\ntwo qubits is to transform it to a Bell diagonal state. In this paper we derive\nan explicit form of the local operation that can realize such a transformation.\nThe result obtained is universal for arbitrary entangled two-qubit states and\nit discloses that the corresponding local filter is not unique for density\nmatrices with rank $n=2$ and can be exclusively determined for that with $n=3$\nand 4. As illustrations, a four-parameters family of mixed states are explored,\nthe local filter as well as the transformation probability are given\nexplicitly, which verify the validity of the general result.",
    "arxiv_id": "quant-ph/0203092",
    "authors": [
      "Li-Xiang Cen",
      "Nan-Jian Wu",
      "Fu-Hua Yang",
      "Jun-Hong An"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.052318",
    "journal_ref": "Phys. Rev. A 65, 052318 (2002)",
    "title": "Local transformation of mixed states of two qubits to Bell diagonal   states",
    "url": "https://arxiv.org/abs/quant-ph/0203092"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1d6260b3-fc8c-4eb8-9a61-588876da94b6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}