{
  "annotation_id": "d8f7529e-b909-48ee-95e5-3f57a3602e4e",
  "date_created": "2026-03-02T18:02:30.153000Z",
  "date_modified": "2026-03-02T18:02:30.153000Z",
  "file_hash": "aca8d5a380bad953b9fa517045975c976318a53bd56cc2382251786460ef3b5b",
  "private": false,
  "record": {
    "abstract": "The N -body problem in a double well requires new features for quantum\ninformation processing, macroscopic quantum superposition, and other\nfundamental studies of quantum many body physics in ultracold atoms. One needs\n(a) tilt, and (b) to go beyond the single-particle ground state in each well,\ni.e., to two or more energy levels. For (a), we show that a small potential\ndifference between the wells, or tilt, causes the decoherence of Schrodinger\ncat states. However, these states reappear when the tilt can be compensated by\natom-atom interactions; these tilted cat states constitute partial cats that\nare protected from decoherence by the many body wavefunction. For (b), we\nprovide explicit criteria for when two energy levels are needed to describe the\nstate space. For typical experimental parameters, two levels are indeed\nrequired for creation of cat states.",
    "arxiv_id": "quant-ph/0609119",
    "authors": [
      "D. R. Dounas-Frazer",
      "A. M. Hermundstad",
      "L. D. Carr"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1103/PhysRevLett.99.200402",
    "journal_ref": "Phys. Rev. Lett. 99, 200402 (2007)",
    "title": "Ultracold Bosons in a Tilted Multi-level Double-Well Potential",
    "url": "https://arxiv.org/abs/quant-ph/0609119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d65aa98f-2cb6-494d-b03e-d3ce9f7bcbbd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}