{
  "annotation_id": "c1f7c2bb-5db4-4e6b-8001-23c85e055c46",
  "date_created": "2026-03-02T18:01:52.985000Z",
  "date_modified": "2026-03-02T18:01:52.985000Z",
  "file_hash": "5a20ce49b38df9e8665611feae149ae30bc7810ac4f0e63fbb5d658ac2997b83",
  "private": false,
  "record": {
    "abstract": "We investigate the role of excess quantum noise in type-II degenerate\nparametric down conversion in a cavity with non-orthogonal polarization\neigenmodes. Since only two modes are involved we are able to derive an\nanalytical expression for the twin-photon generation rate measured outside the\ncavity as a function of the degree of mode nonorthogonality. Contrary to recent\nclaims we conclude that there is no evidence of excess quantum noise for a\nparametric amplifier working so far below threshold that spontaneous processes\ndominate.",
    "arxiv_id": "quant-ph/0206042",
    "authors": [
      "A. Aiello",
      "M. P. van Exter",
      "G. Nienhuis",
      "J. P. Woerdman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0030-4018(02)01995-8",
    "title": "Does Excess Quantum Noise Exist in Spontaneous Processes?",
    "url": "https://arxiv.org/abs/quant-ph/0206042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "287ce92c-7796-4736-a42c-3d1b136caf29",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}