{
  "id": "cond-mat/0504555",
  "version": "v1",
  "published": "2005-04-21T12:48:10.000Z",
  "updated": "2005-04-21T12:48:10.000Z",
  "title": "Noise and Bistabilities in Quantum Shuttles",
  "authors": [
    "Christian Flindt",
    "Tomas Novotny",
    "Antti-Pekka Jauho"
  ],
  "comment": "4 pages, 4 figures, Contribution to ICNF 2005, Salamanca, Spain, September, 2005",
  "journal": "AIP Conf. Proc. 780, 442 (2005)",
  "doi": "10.1063/1.2036788",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We present a study of current fluctuations in two models proposed as quantum shuttles. Based on a numerical evaluation of the first three cumulants of the full counting statistics we have recently shown that a giant enhancement of the zero-frequency current noise in a single-dot quantum shuttle can be explained in terms of a bistable switching between two current channels. By applying the same method to a quantum shuttle consisting of a vibrating quantum dot array, we show that the same mechanism is responsible for a giant enhancement of the noise in this model, although arising from very different physics. The interpretation is further supported by a numerical evaluation of the finite-frequency noise. For both models we give numerical results for the effective switching rates.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-04-21T12:48:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "giant enhancement",
      "bistabilities",
      "single-dot quantum shuttle",
      "vibrating quantum dot array",
      "numerical evaluation"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AIP",
      "journal": "AIP Conf. Proc."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}