{
  "annotation_id": "237fba38-7109-49ff-b7c8-6174154d2282",
  "date_created": "2026-03-02T18:02:06.881000Z",
  "date_modified": "2026-03-02T18:02:06.881000Z",
  "file_hash": "df412bbdbce2e98504af00da1e4e34b0342c7cf8875fb62f172225e438215361",
  "private": false,
  "record": {
    "abstract": "We propose how to generate macroscopic quantum superposition states using a\nmicrowave cavity containing a superconducting charge qubit. Based on the\nmeasurement of charge states, we show that the superpositions of two\nmacroscopically distinguishable coherent states of a single-mode cavity field\ncan be generated by a controllable interaction between a cavity field and a\ncharge qubit. After such superpositions of the cavity field are created, the\ninteraction can be switched off by the classical magnetic field, and there is\nno information transfer between the cavity field and the charge qubit. We also\ndiscuss the generation of the superpositions of two squeezed coherent states.",
    "arxiv_id": "quant-ph/0406058",
    "authors": [
      "Yu-xi Liu",
      "L. F. Wei",
      "Franco Nori"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall",
      "cond-mat.supr-con"
    ],
    "doi": "10.1103/PhysRevA.71.063820",
    "journal_ref": "Phys. Rev. A 71, 063820 (2005)",
    "title": "Preparation of macroscopic quantum superposition states of a cavity   field via coupling to a superconducting charge qubit",
    "url": "https://arxiv.org/abs/quant-ph/0406058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b9fd766e-2b68-40c7-b729-70c1fbff4ed6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}