{
  "annotation_id": "875c75b4-770e-480a-8613-0e2f8c659ea1",
  "date_created": "2026-03-02T18:02:06.457000Z",
  "date_modified": "2026-03-02T18:02:06.457000Z",
  "file_hash": "c537adc3b5a59aa6602ffd494d167ff636d50321db391fbda1acc8d1599fec5b",
  "private": false,
  "record": {
    "abstract": "We investigated the intensity noise spectra of the single beam of a\npump-enhanced continuous-wave (cw) optical parametric oscillator (OPO), which\nwas used to generate quantum correlated twin beams, as a function of the pump\npower. With a triply (pump-, signal-, and idler-) resonant cavity, the\noscillation threshold of our OPO was about 8.5+/-1.3 mW and the measured slope\nconversion efficiency was 0.72+/-0.02. A twin beams with power of 240 mW were\ngenerated at pump power of 350 mW. The relaxation oscillation frequencies,\nwhich depend on the pump power, were observed when the pump power of OPO was\nfrom 12.5 mW to 28 mW. The experimental results confirm the predicted increase\nin OPO relaxation frequency with pump power. Squeezing of the single beam\nintensity was for the first time inferred experimentally by exploiting nature\nof quantum noise dependent on loss.",
    "arxiv_id": "quant-ph/0402119",
    "authors": [
      "Yun Zhangx",
      "Katsuyuki Kasai",
      "Kazuhiro Hayasaka"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Single-beam noise characteristics of quantum correlated twin beams",
    "url": "https://arxiv.org/abs/quant-ph/0402119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "05be29cf-fac3-4c46-b692-19bf9850d9f5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}