{
  "annotation_id": "292d7d45-2fcf-40ba-a6e7-c16b631807ae",
  "date_created": "2026-03-02T18:02:34.368000Z",
  "date_modified": "2026-03-02T18:02:34.368000Z",
  "file_hash": "0aae6acc1090bf737f22c0b8d621a2954bece165ed2d526afaf011c2f25ac9f0",
  "private": false,
  "record": {
    "abstract": "We present an algorithmic approach to calculate the quantum-noise spectral\ndensity of photocurrents generated by optical fields with arbitrary discrete\nclassical spectrum in coherent or squeezed states. The measurement scheme may\ninclude an arbitrary number of demodulations of the photocurrent. Thereby, our\nmethod is applicable to the general heterodyne detection scheme which is\nimplemented in many experiments. For some of these experiments, e.g. in\nlaser-interferometric gravitational-wave detectors, a reliable prediction of\nthe quantum noise of fields in coherent and squeezed states plays a decisive\nrole in the design phase and detector characterization. Still, our\ninvestigation is limited in two ways. First, we only consider coherent and\nsqueezed states of the field and second, we demand that the photocurrent\ndepends linearly on the field\u0027s vacuum amplitudes which means that at least one\nof the classical components is comparatively strong.",
    "arxiv_id": "quant-ph/0703119",
    "authors": [
      "J. Harms",
      "P. Cochrane",
      "A. Freise"
    ],
    "categories": [
      "quant-ph",
      "gr-qc"
    ],
    "doi": "10.1103/PhysRevA.76.023803",
    "title": "Quantum-Noise Power Spectrum of Fields with Discrete Classical   Components",
    "url": "https://arxiv.org/abs/quant-ph/0703119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b7b32425-2fd6-4163-9c2d-61e2c50263af",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}