{
  "annotation_id": "445ba084-2b6c-44f6-a032-3b4f594c3be2",
  "date_created": "2026-03-02T18:02:07.107000Z",
  "date_modified": "2026-03-02T18:02:07.107000Z",
  "file_hash": "ddb82a9bf9d69d756dc55f45f1e56e1575f0d39959ad2dcec3f37cc7c4307412",
  "private": false,
  "record": {
    "abstract": "We report on the experimental demonstration of strong quadrature EPR\nentanglement and squeezing at very low noise sideband frequencies produced by a\nsingle type-II, self-phase-locked, frequency degenerate optical parametric\noscillator below threshold. The generated two-mode squeezed vacuum state is\npreserved for noise frequencies as low as 50 kHz. Designing simple setups able\nto generate non-classical states of light in the kHz regime is a key challenge\nfor high sensitivity detection of ultra-weak physical effects such as\ngravitational wave or small beam displacement.",
    "arxiv_id": "quant-ph/0403224",
    "authors": [
      "Julien Laurat",
      "Thomas Coudreau",
      "Gaelle Keller",
      "Nicolas Treps",
      "Claude Fabre"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.042315",
    "journal_ref": "Physical Review A 70 (2004) 042315",
    "title": "Compact Source of EPR Entanglement and Squeezing at Very Low Noise   Frequencies",
    "url": "https://arxiv.org/abs/quant-ph/0403224"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d1e36750-6fe3-4e6d-8055-dc50311e07e9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}