{
  "annotation_id": "d215de9b-201d-45fb-b637-627e035d1480",
  "date_created": "2026-03-02T18:02:45.136000Z",
  "date_modified": "2026-03-02T18:02:45.136000Z",
  "file_hash": "221af1ced5961686ef31fc1ee9d3ed7cce8d85f9662bedf45534e593c96f75ab",
  "private": false,
  "record": {
    "abstract": "We report the first observation of the quantum effects of competing\n$\\chi^{(2)}$ nonlinearities. We also report new classical signatures of\ncompetition, namely clamping of the second harmonic power and production of\nnondegenerate frequencies in the visible. Theory is presented that describes\nthe observations as resulting from competition between various $\\chi^{(2)}$\nupconversion and downconversion processes. We show that competition imposes\nhitherto unsuspected limits to both power generation and squeezing. The\nobserved signatures are expected to be significant effects in practical\nsystems.",
    "arxiv_id": "quant-ph/9810004",
    "authors": [
      "A. G. White",
      "P. K. Lam",
      "M. S. Taubman",
      "M. A. M. Marte",
      "S. Schiller",
      "D. E. McClelland",
      "H. -A. Bachor"
    ],
    "categories": [
      "quant-ph",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.55.4511",
    "journal_ref": "Physical Review A 55, 4511-4515 (1997)",
    "title": "Classical and quantum signatures of competing chi(2) nonlinearities",
    "url": "https://arxiv.org/abs/quant-ph/9810004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a94e3cfe-f2f6-418c-ae3e-449bd1571b68",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}