{
  "annotation_id": "f7fd0cca-564b-410d-bc09-847c287c057c",
  "date_created": "2026-03-02T18:02:09.394000Z",
  "date_modified": "2026-03-02T18:02:09.394000Z",
  "file_hash": "a2636ba3b48b4e7455d8f50fbafd774b8457173ae4820df165dbcc36457f7f3b",
  "private": false,
  "record": {
    "abstract": "We revisit the harmonic approximation (HA) for a large Josephson junction\ninteracting with some charge qubits through the variational approach for the\nquantum dynamics of the junction-qubit coupling system. By making use of\nnumerical calculation and analytical treatment, the conditions under which HA\nworks well can be precisely presented to control the parameters implementing\nthe two-qubit quantum logical gate through the couplings to the large junction\nwith harmonic oscillator (HO) Hamiltonian.",
    "arxiv_id": "quant-ph/0409013",
    "authors": [
      "T. Shi",
      "B. Chen",
      "Z. Song",
      "C. P. Sun"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1088/0253-6102/43/5/006",
    "journal_ref": "Comm. Theor. Phys. 43 795(2005)",
    "title": "On the Harmonic approximation for large Josephson junction coupling   charge qubits",
    "url": "https://arxiv.org/abs/quant-ph/0409013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4d8cb49d-4a9f-4883-8cd6-be07bacfb658",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}