{
  "annotation_id": "dad99a7c-852d-493a-80b5-1f1443c6fb5d",
  "date_created": "2026-03-02T18:01:45.840000Z",
  "date_modified": "2026-03-02T18:01:45.840000Z",
  "file_hash": "e9585b29d278eda7cec869377d4e1e5b052c428306864df1f47e9de910924d2e",
  "private": false,
  "record": {
    "abstract": "We develop a systematic theory of quantum fluctuations in the driven\nparametric oscillator (OPO), including the region near threshold. This allows\nus to treat the limits imposed by nonlinearities to quantum squeezing and noise\nreduction, in this non-equilibrium quantum phase-transition. In particular, we\ncompute the squeezing spectrum near threshold, and calculate the optimum value.\nWe find that the optimal noise reduction occurs at different driving fields,\ndepending on the ratio of damping rates. The largest spectral noise reductions\nare predicted to occur with a very high-Q second-harmonic cavity. Our analytic\nresults agree well with stochastic numerical simulations. We also compare the\nresults obtained in the positive-P representation, as a fully quantum\nmechanical calculation, with the truncated Wigner phase space equation, also\nknown as semiclassical theory.",
    "arxiv_id": "quant-ph/0105137",
    "authors": [
      "S. Chaturvedi",
      "K. Dechoum",
      "P. D. Drummond"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Limits to squeezing in the degenerate OPO",
    "url": "https://arxiv.org/abs/quant-ph/0105137"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1b482846-0b27-4a66-aa1e-277f6611c563",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}