{
  "annotation_id": "efec086a-4d8e-400a-b747-e0609f56b95f",
  "date_created": "2026-03-02T18:02:02.597000Z",
  "date_modified": "2026-03-02T18:02:02.597000Z",
  "file_hash": "adb182772da6434c4f9d2623e70a1bbc9bb2c8a04c6341976083bf057892b95a",
  "private": false,
  "record": {
    "abstract": "The sensitivity in interferometric measurements such as gravitational-wave\ndetectors is ultimately limited by quantum noise of light. We discuss the use\nof feedback mechanisms to reduce the quantum effects of radiation pressure.\nRecent experiments have shown that it is possible to reduce the thermal motion\nof a mirror by cold damping. The mirror motion is measured with an\noptomechanical sensor based on a high-finesse cavity, and reduced by a feedback\nloop. We show that this technique can be extended to lock the mirror at the\nquantum level. In gravitational-waves interferometers with Fabry-Perot cavities\nin each arms, it is even possible to use a single feedback mechanism to lock\none cavity mirror on the other. This quantum locking greatly improves the\nsensitivity of the interferometric measurement. It is furthermore insensitive\nto imperfections such as losses in the interferometer.",
    "arxiv_id": "quant-ph/0311167",
    "authors": [
      "A Heidmann",
      "J. -M. Courty",
      "M. Pinard",
      "J. Lebars"
    ],
    "categories": [
      "quant-ph",
      "gr-qc"
    ],
    "doi": "10.1088/1464-4266/6/8/009",
    "journal_ref": "J.Opt.B Quant.Semiclass.Opt. 6 (2004) S684",
    "title": "Beating quantum limits in interferometers with quantum locking of   mirrors",
    "url": "https://arxiv.org/abs/quant-ph/0311167"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ef84a9a3-025b-4017-a00d-8b22a41cc260",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}