{
  "annotation_id": "cf1e445a-1718-44f9-8a4b-43583e1bb6b2",
  "date_created": "2026-03-02T18:01:39.254000Z",
  "date_modified": "2026-03-02T18:01:39.254000Z",
  "file_hash": "7941da604cf77743003e6f9d770052607e95a5fc336c59f9acb2a4ff4f6c8e45",
  "private": false,
  "record": {
    "abstract": "The time evolution of driven two-level systems in the far off-resonance\nregime is studied analytically. We obtain a general first-order perturbative\nexpression for the time-dependent density operator which is applicable\nregardless of the coupling strength value. In the strong field regime, our\nperturbative expansion remains valid even when the far off-resonance condition\nis not fulfilled. We find that, in the absence of dissipation, driven two-level\nsystems exhibit coherent population trapping in a certain region of parameter\nspace, a property which, in the particular case of a symmetric double-well\npotential, implies the well-known localization of the system in one of the two\nwells. Finally, we show how the high-order harmonic generation that this kind\nof systems display can be obtained as a straightforward application of our\nformulation.",
    "arxiv_id": "quant-ph/0006036",
    "authors": [
      "V. Delgado",
      "J. M. Gomez Llorente"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1088/0953-4075/33/23/312",
    "journal_ref": "J. Phys. B, 33 (2000) 5403",
    "title": "Perturbative evolution of far off-resonance driven two-level systems:   Coherent population trapping, localization, and harmonic generation",
    "url": "https://arxiv.org/abs/quant-ph/0006036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "27e62cec-dcfb-479e-b3d0-4b1b91f6a2fe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}