{
  "annotation_id": "0c0c11bd-6a7b-49ad-a139-21c560140b18",
  "date_created": "2026-03-02T18:02:19.406000Z",
  "date_modified": "2026-03-02T18:02:19.406000Z",
  "file_hash": "735b078dfaa9299b3ab6cc068941ed09ed1822c749272e8392f321247ac84e5e",
  "private": false,
  "record": {
    "abstract": "We show experimentally how noncollinear geometries in spontaneous parametric\ndownconversion induce ellipticity of the shape of the spatial mode function.\nThe degree of ellipticity depends on the pump beam width, especially for highly\nfocused beams. We also discuss the ellipticity induced by the spectrum of the\npump beam.",
    "arxiv_id": "quant-ph/0508058",
    "authors": [
      "Gabriel Molina-Terriza",
      "Stefano Minardi",
      "Yana Deyanova",
      "Clara I. Osorio",
      "Martin Hendrych",
      "Juan P. Torres"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.065802",
    "title": "Shape of the spatial mode function of photons generated in noncollinear   spontaneous parametric downconversion",
    "url": "https://arxiv.org/abs/quant-ph/0508058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d697827b-5a08-49a1-b430-3c26b0ebcfc1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}