{
  "annotation_id": "5f0c5ee5-63f8-4617-9712-3ba6f6ef71b5",
  "date_created": "2026-03-02T18:02:34.120000Z",
  "date_modified": "2026-03-02T18:02:34.120000Z",
  "file_hash": "2411fedb1c4e06198664677579e7ee36c58b23fa7146aa43239fb098028c359c",
  "private": false,
  "record": {
    "abstract": "We report on the generation of a stable continuous-wave low-frequency\nsqueezed vacuum field with a squeezing level of $3.8\\pm0.1$ dB at 1064 nm, the\nwavelength at which laser interferometers for gravitational wave (GW) detection\noperate, using periodically poled KTiOPO$_4$ (PPKTP) in a sub-threshold optical\nparametric oscillator. PPKTP has the advantages of higher nonlinearity, smaller\nintra-crystal and pump-induced seed absorption, user-specified parametric\ndown-conversion temperature, wider temperature tuning range, and lower\nsusceptibility to thermal lensing over alternative nonlinear materials such as\nMgO doped or periodically poled LiNbO$_3$, and is, therefore, an excellent\nmaterial for generation of squeezed vacuum fields for application to laser\ninterferometers for GW detection.",
    "arxiv_id": "quant-ph/0703001",
    "authors": [
      "Keisuke Goda",
      "Eugeniy E. Mikhailov",
      "Osamu Miyakawa",
      "Shailendhar Saraf",
      "Stephen Vass",
      "Alan Weinstein",
      "Nergis Mavalvala"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/OL.33.000092",
    "title": "Generation of a stable low-frequency squeezed vacuum field with   periodically-poled KTiOPO$_4$ at 1064 nm",
    "url": "https://arxiv.org/abs/quant-ph/0703001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cd4e200c-d79c-4779-b1b0-a773f2713160",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}