{
  "annotation_id": "611fd9a4-3aeb-4584-b565-deed83ea2c03",
  "date_created": "2026-03-02T18:02:27.350000Z",
  "date_modified": "2026-03-02T18:02:27.350000Z",
  "file_hash": "00a9cda0a350148d2aa1add0632b63359c5542803010c63ae9fe7ba41a0cc7b4",
  "private": false,
  "record": {
    "abstract": "We propose and experimentally demonstrate a method for non-invasive\nmeasurements of cavity parameters by injection of squeezed vacuum into an\noptical cavity. The principle behind this technique is the destruction of the\ncorrelation between upper and lower quantum sidebands with respect to the\ncarrier frequency when the squeezed field is incident on the cavity. This\nmethod is especially useful for ultrahigh $Q$ cavities, such as whispering\ngallery mode (WGM) cavities, in which absorption and scattering by\nlight-induced nonlinear processes inhibit precise measurements of the cavity\nparameters. We show that the linewidth of a test cavity is measured to be\n$\\gamma = 844\\pm40$ kHz, which agrees with the classically measured linewidth\nof the cavity within the uncertainty ($\\gamma=856\\pm34$ kHz).",
    "arxiv_id": "quant-ph/0605207",
    "authors": [
      "Eugeniy E. Mikhailov",
      "Keisuke Goda",
      "Nergis Mavalvala"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.033817",
    "journal_ref": "Phys. Rev. A 74, 033817 (2006)",
    "title": "Non-invasive Measurements of Cavity Parameters by Use of Squeezed Vacuum",
    "url": "https://arxiv.org/abs/quant-ph/0605207"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6a45f8ac-ea63-4c1c-8ece-7a45c6dbde0f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}