{
  "annotation_id": "d31bb5db-2c79-4043-a1dd-038d9321d610",
  "date_created": "2026-03-02T18:02:40.658000Z",
  "date_modified": "2026-03-02T18:02:40.658000Z",
  "file_hash": "b4ecd88333249467e8c64f598264fd5d8082525abe6f93783ccdfa78d87f3186",
  "private": false,
  "record": {
    "abstract": "A two-step detection strategy is suggested for the precise measurement of the\noptical phase-shift. In the first step an unsharp, however, unbiased joint\nmeasurement of the phase and photon number is performed by heterodyning the\nsignal field. Information coming from this step is then used for suitable\nsqueezing of the probe mode to obtain a sharp phase distribution. Application\nto squeezed states leads to a phase sensitivity scaling as $\\Delta\\phi\\simeq\nN^{-1}$ relative to the total number of photons impinged into the apparatus.\nNumerical simulations of the whole detection strategy are also also presented.",
    "arxiv_id": "quant-ph/9801067",
    "authors": [
      "A. V. Chizhov",
      "V. De Renzi",
      "M. G. A. Paris"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(97)00852-9",
    "journal_ref": "Phys.Lett. A237 (1998) 201",
    "title": "A two-step optimized measurement for the phase-shift",
    "url": "https://arxiv.org/abs/quant-ph/9801067"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "93f5adaf-786e-4387-88b1-d7e2884991da",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}