{
  "annotation_id": "d1636096-d3f5-4ba1-b1e6-c4ee2cc1844e",
  "date_created": "2026-03-02T18:01:42.728000Z",
  "date_modified": "2026-03-02T18:01:42.728000Z",
  "file_hash": "87c8df5c98004aab8dfd89cc15b35b2208fae37bfbc80932fc93bc5af293f179",
  "private": false,
  "record": {
    "abstract": "We report the observation of correlated photon pairs generated by spontaneous\nparametric down-conversion in a quasi-phase matched KTiOPO4 nonlinear\nwaveguide. The highest ratio of coincidence to single photon count rates\nobserved in the 830 nm wavelength region exceeds 18%. This makes nonlinear\nwaveguides a promising source of correlated photons for metrology and quantum\ninformation processing applications. We also discuss possibilities of\ncontrolling the spatial characteristics of the down-converted photons produced\nin multimode waveguide structures.",
    "arxiv_id": "quant-ph/0103026",
    "authors": [
      "Konrad Banaszek",
      "Alfred B. U\u0027Ren",
      "Ian A. Walmsley"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/OL.26.001367",
    "journal_ref": "Opt. Lett. 26, 1367-1369 (2001)",
    "title": "Generation of correlated photons in controlled spatial modes by   down-conversion in nonlinear waveguides",
    "url": "https://arxiv.org/abs/quant-ph/0103026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cc446e16-e66a-42ee-9ed0-aabc5c4314cc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}