{
  "id": "1001.3032",
  "version": "v2",
  "published": "2010-01-18T12:05:04.000Z",
  "updated": "2010-05-31T08:57:51.000Z",
  "title": "Quantum Behavior of Measurement Apparatus",
  "authors": [
    "Taoufik Amri"
  ],
  "comment": "APS Preprint format : 19 pages with 6 figures, a new figure (Fig. 2) was added. Questions and comments are welcome",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We precise for the first time the quantum behavior of a measurement apparatus in the framework of the usual interpretation of quantum physics. We show how such a behavior can also be studied by the retrodiction of pre-measurement states corresponding to its responses. We translate in terms of these states some interesting properties of the behavior of an apparatus, such as the projectivity, the fidelity, the non-Gaussian character, or the non-classicality of measurements performed by this one. We also propose an experimental procedure allowing the tomography of these pre-measurement states for optical detectors. We illustrate the relevance of these new notions for measurements, by evaluating them for two detectors widely used in quantum optics: the avalanche photodiode and the homodyne detection.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-05-31T08:57:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "measurement apparatus",
      "quantum behavior",
      "non-gaussian character",
      "usual interpretation",
      "quantum physics"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 19,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010arXiv1001.3032A"
    }
  }
}