{
  "annotation_id": "452ebbea-30e9-4bdc-ac3d-b074d4307e7d",
  "date_created": "2026-03-02T18:02:45.092000Z",
  "date_modified": "2026-03-02T18:02:45.092000Z",
  "file_hash": "679ee2e35d94892a4502d48964b06c68d0d6926efd818b42c6f4ecf56eff431e",
  "private": false,
  "record": {
    "abstract": "We perform the exact numerical diagonalization of the Hamiltonians that\ndescribe both degenerate and nondegenerate parametric amplifiers, by exploiting\nthe conservation laws pertaining each device. We clarify the conditions under\nwhich the parametric approximation holds, showing that the most relevant\nrequirement is the coherence of the pump after the interaction, rather than its\nundepletion.",
    "arxiv_id": "quant-ph/9902013",
    "authors": [
      "G. M. D\u0027Ariano",
      "M. G. A. Paris",
      "M. F. Sacchi"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Nuovo Cim. B114 (1999) 339-354",
    "title": "On the parametric approximation in quantum optics",
    "url": "https://arxiv.org/abs/quant-ph/9902013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "517626c6-5399-4b59-8d9d-4fbfcfd18a41",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}