{
  "annotation_id": "807ac182-9baa-4f80-ac3e-d9273aea774b",
  "date_created": "2026-03-02T18:01:42.418000Z",
  "date_modified": "2026-03-02T18:01:42.418000Z",
  "file_hash": "1a94a4dd464f3b6ba18fd9a66aa8ba9b57f422986f8c8287f9943d35428988fe",
  "private": false,
  "record": {
    "abstract": "A coherent mechanism of robust population inversion in atomic and molecular\nsystems by a chirped field is presented. It is demonstrated that a field of\nsufficiently high chirp rate imposes a certain relative phase between a ground\nand excited state wavefunction of a two-level system. The value of the relative\nphase angle is thus restricted to be negative and close to 0 or $-\\pi$ for\npositive and negative chirp, respectively. This explains the unidirectionality\nof the population transfer from the ground to the excited state. In a molecular\nsystem composed of a ground and excited potential energy surface the symmetry\nbetween the action of a pulse with a large positive and negative chirp is\nbroken. The same framwork of the coherent mechanism can explain the symmetry\nbreaking and the population inversion due to a positive chirped field.",
    "arxiv_id": "quant-ph/0012062",
    "authors": [
      "Jiri Vala",
      "Ronnie Kosloff"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/OE.8.000238",
    "title": "Coherent Mechanism of Robust Population Inversion",
    "url": "https://arxiv.org/abs/quant-ph/0012062"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c17112f3-b983-472d-8c7f-2a01fef7fbf1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}