{
  "id": "1712.00824",
  "version": "v1",
  "published": "2017-12-03T19:36:11.000Z",
  "updated": "2017-12-03T19:36:11.000Z",
  "title": "Dephasing in Mach-Zehnder interferometer by an Ohmic contact",
  "authors": [
    "Edvin G. Idrisov",
    "Ivan P. Levkivskyi",
    "Eugene V. Sukhorukov"
  ],
  "comment": "5 pages, 4 figures, supplementary material",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study dephasing in an electronic Mach-Zehnder (MZ) interferometer based on quantum Hall (QH) edge states by a micromiter-sized Ohmic contact embedded in one of its arms. We find that at the filling factor $\\nu=1$, as well as in the case where an Ohmic contact is connected to an MZ interfeoremter by a quantum point contact (QPC) that transmits only one electron channel, the phase coherence may not be fully suppressed. Namely, if the voltage bias $\\Delta \\mu$ and the temperature $T$ are small compared to the charging energy of the Ohmic contact $E_C$, the free fermion picture is manifested, and the visibility saturates at its maximum value. At large biases, $\\Delta \\mu \\gg E_C$, the visibility decays in a power-law manner.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-03T19:36:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "mach-zehnder interferometer",
      "quantum point contact",
      "free fermion picture",
      "quantum hall",
      "edge states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}