{
  "annotation_id": "796ab100-f68b-4343-8d2e-bd06a635ec20",
  "date_created": "2026-03-02T18:02:26.467000Z",
  "date_modified": "2026-03-02T18:02:26.467000Z",
  "file_hash": "30ae8d122099459c26220230941aa2c0952685b484ed5feb3fe15f71a54d5611",
  "private": false,
  "record": {
    "abstract": "We have previously [Phys. Rev. A 65, 043803 (2002)] analyzed adaptive\nmeasurements for estimating the continuously varying phase of a coherent beam,\nand a broadband squeezed beam. A real squeezed beam must have finite photon\nflux N and hence can be significantly squeezed only over a limited frequency\nrange. In this paper we analyze adaptive phase measurements of this type for a\nrealistic model of a squeezed beam. We show that, provided it is possible to\nsuitably choose the parameters of the beam, a mean-square phase uncertainty\nscaling as (N/kappa)^{-5/8} is possible, where kappa is the linewidth of the\nbeam resulting from the fluctuating phase. This is an improvement over the\n(N/kappa)^{-1/2} scaling found previously for coherent beams. In the\nexperimentally realistic case where there is a limit on the maximum squeezing\npossible, the variance will be reduced below that for coherent beams, though\nthe scaling is unchanged.",
    "arxiv_id": "quant-ph/0603189",
    "authors": [
      "Dominic W. Berry",
      "Howard M. Wiseman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.063824",
    "journal_ref": "Phys. Rev. A 73, 063824 (2006)",
    "title": "Adaptive phase measurements for narrowband squeezed beams",
    "url": "https://arxiv.org/abs/quant-ph/0603189"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0da3ae91-56a0-4661-b016-dd5b4e599652",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}