{
  "id": "cond-mat/0505044",
  "version": "v1",
  "published": "2005-05-02T15:22:38.000Z",
  "updated": "2005-05-02T15:22:38.000Z",
  "title": "Continuous quantum measurement with independent detector cross-correlations",
  "authors": [
    "Andrew N. Jordan",
    "Markus Buttiker"
  ],
  "comment": "4 pages, 2 figures",
  "journal": "Phys. Rev. Lett. 95, 220401 (2005)",
  "doi": "10.1103/PhysRevLett.95.220401",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We investigate the advantages of using two independent, linear detectors for continuous quantum measurement. For single-shot quantum measurement, the measurement is maximally efficient if the detectors are twins. For weak continuous measurement, cross-correlations allow a violation of the Korotkov-Averin bound for the detector's signal-to-noise ratio. A vanishing noise background provides a nontrivial test of ideal independent quantum detectors. We further investigate the correlations of non-commuting operators, and consider possible deviations from the independent detector model for mesoscopic conductors coupled by the screened Coulomb interaction.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-05-02T15:22:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "continuous quantum measurement",
      "independent detector cross-correlations",
      "ideal independent quantum detectors",
      "single-shot quantum measurement",
      "detectors signal-to-noise ratio"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}