{
  "id": "cond-mat/0109544",
  "version": "v1",
  "published": "2001-09-28T18:25:28.000Z",
  "updated": "2001-09-28T18:25:28.000Z",
  "title": "Aharonov-Casher-Effect Suppression of Macroscopic Tunneling of Magnetic Flux",
  "authors": [
    "Jonathan R. Friedman",
    "D. V. Averin"
  ],
  "comment": "RevTeX, 9 pages, 3 figures, submitted to Phys. Rev. Lett",
  "journal": "Phys. Rev. Lett., 88, 050403 (2002)",
  "doi": "10.1103/PhysRevLett.88.050403",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con",
    "quant-ph"
  ],
  "abstract": "We suggest a system in which the amplitude of macroscopic flux tunneling can be modulated via the Aharonov-Casher effect. The system is an rf-SQUID with the Josephson junction replaced by a Bloch transistor -- two junctions separated by a small superconducting island on which the charge can be induced by an external gate voltage. When the Josephson coupling energies of the junctions are equal and the induced charge is q=e, destructive interference between tunneling paths brings the flux tunneling rate to zero. The device may also be useful as a qubit for quantum computation.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2001-09-28T18:25:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetic flux",
      "aharonov-casher-effect suppression",
      "macroscopic tunneling",
      "external gate voltage",
      "aharonov-casher effect"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}