{
  "annotation_id": "ff8ea7b6-2459-4c56-9ca0-eb5ae40fe529",
  "date_created": "2026-03-02T18:01:52.486000Z",
  "date_modified": "2026-03-02T18:01:52.486000Z",
  "file_hash": "b52f9803d0ebb18299dc3421e07442bed4df34a13f465f0c5ae646f20e719c18",
  "private": false,
  "record": {
    "abstract": "We analyze conditions leading to enhancement of thermal entanglement in\ntwo-qubit XY models. The effect of including cross-product terms, besides the\nstandard XY exchange interactions, in the presence of an external magnetic\nfield, is investigated. We show that entanglement can be yield at elevated\ntemperatures by tuning the orientation of the external magnetic field. The\ndetails of the intrinsic exchange interactions determine the optimal\norientation.",
    "arxiv_id": "quant-ph/0206018",
    "authors": [
      "Celia Anteneodo",
      "Andre M. C. Souza"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/5/1/310",
    "journal_ref": "J. Opt. B 5, 73 (2003)",
    "title": "Enhancement of thermal entanglement in two-qubit XY models",
    "url": "https://arxiv.org/abs/quant-ph/0206018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "39d7d4ba-7259-4244-ae1e-74ebc999e1c2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}