{
  "annotation_id": "c424f025-2f97-4827-b7f2-66fffd252381",
  "date_created": "2026-03-02T18:02:24.010000Z",
  "date_modified": "2026-03-02T18:02:24.010000Z",
  "file_hash": "87cbb1092c408c3bbb16fffb22e8b421a99bd95eaec01196cac235ef9e4d667e",
  "private": false,
  "record": {
    "abstract": "The second-order susceptibility which vanishes in the electric-dipole\napproximation for an atom is induced by the spontaneously generated coherence.\nThe spontaneously generated coherence considered in a lambda-type atomic system\ncauses an indirect coupling between the lower two levels which acts\nequivalently as a DC-field and therefore makes possible the existence of\nsecond-order susceptibility.",
    "arxiv_id": "quant-ph/0603107",
    "authors": [
      "Yueping Niu",
      "Shangqing Gong"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Spontaneously generated coherence induced second-order susceptibility in   atomic gases",
    "url": "https://arxiv.org/abs/quant-ph/0603107"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "98e2a2bb-f2c9-4f8e-99e3-cac167ca1f7f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}