{
  "annotation_id": "5b8c2c6e-1d21-4e10-864e-ed458b199275",
  "date_created": "2026-03-02T18:02:20.739000Z",
  "date_modified": "2026-03-02T18:02:20.739000Z",
  "file_hash": "80ac19d15c90d572fb18caff945b46881df11c007250cdac8bba5266291f8d44",
  "private": false,
  "record": {
    "abstract": "We describe a new scheme for the measurement of mean photon flux at an\narbitrary optical sideband frequency using homodyne detection. Experimental\nimplementation of the technique requires an AOM in addition to the homodyne\ndetector, and does not require phase locking. The technique exhibits\npolarisation, frequency and spatial mode selectivity, as well as much improved\nspeed, resolution and dynamic range when compared to linear photodetectors and\navalanche photo diodes (APDs), with potential application to quantum state\ntomography and information encoding using an optical frequency basis.\nExperimental data also directly confirms the Quantum Mechanical description of\nvacuum noise.",
    "arxiv_id": "quant-ph/0509128",
    "authors": [
      "J. G. Webb",
      "T. C. Ralph",
      "E. H. Huntington"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.033808",
    "title": "Homodyne measurement of average photon number",
    "url": "https://arxiv.org/abs/quant-ph/0509128"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b8f6fbfd-76fd-4603-a253-014064eea8ba",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}