{
  "id": "1504.05602",
  "version": "v1",
  "published": "2015-04-21T20:33:00.000Z",
  "updated": "2015-04-21T20:33:00.000Z",
  "title": "Spectroscopic Evidence of the Aharonov-Casher effect in a Cooper Pair Box",
  "authors": [
    "M. T. Bell",
    "W. Zhang",
    "L. B. Ioffe",
    "M. E. Gershenson"
  ],
  "comment": "6 pages, 3 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We have observed the effect of the Aharonov-Casher (AC) interference on the spectrum of a superconducting system containing a symmetric Cooper pair box (CPB) and a large inductance. By varying the charge $n_{g}$ induced on the CPB island, we observed oscillations of the device spectrum with the period $\\Delta n_{g}=2e$. These oscillations are attributed to the charge-controlled AC interference between the fluxon tunneling processes in the CPB Josephson junctions. Total suppression of the tunneling (complete destructive interference) has been observed for the charge $n_{g}=e(2n+1)$. The CPB in this regime represents the $4\\pi$-periodic Josephson element, which can be used for the development of the parity-protected superconducting qubits.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-04-21T20:33:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "aharonov-casher effect",
      "spectroscopic evidence",
      "symmetric cooper pair box",
      "cpb josephson junctions",
      "periodic josephson element"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}