{
  "annotation_id": "ff26f06e-ea15-475b-80d5-63cec4058867",
  "date_created": "2026-03-02T18:02:37.847000Z",
  "date_modified": "2026-03-02T18:02:37.847000Z",
  "file_hash": "0198d6d3ea0d9cb7476221f5f77d0436d0bd1e9e1fa979b8a18a6a89d87b3f44",
  "private": false,
  "record": {
    "abstract": "The eight-port homodyne detection apparatus is analyzed in the framework of\nthe operational theory of quantum measurement. For an arbitrary quantum noise\nleaking through the unused port of the beam splitter, the positive operator\nvalued measure and the corresponding operational homodyne observables are\nderived. It is shown that such an eight-port homodyne device can be used to\nconstruct the operational quantum trigonometry of an optical field. The quantum\ntrigonometry and the corresponding phase space Wigner functions are derived for\na signal field probed by a classical local oscillator and a squeezed vacuum in\nthe unused port.",
    "arxiv_id": "quant-ph/9611036",
    "authors": [
      "Piotr Kochanski",
      "Krzysztof Wodkiewicz"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Operational Theory of the Eight-Port Homodyne Detection",
    "url": "https://arxiv.org/abs/quant-ph/9611036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d816a0bf-d4a8-410e-bbe7-774aa3ff984b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}