{
  "id": "cond-mat/0305127",
  "version": "v3",
  "published": "2003-05-07T08:34:14.000Z",
  "updated": "2004-09-24T06:29:02.000Z",
  "title": "Coupling of Josephson current qubits using a connecting loop",
  "authors": [
    "Mun Dae Kim",
    "Jongbae Hong"
  ],
  "comment": "5 pages with updates, version to appear in Phys. Rev. B",
  "journal": "Phys. Rev. B 70, 184525 (2004)",
  "doi": "10.1103/PhysRevB.70.184525",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "We propose a coupling scheme for the three-Josephson junction qubits which uses a connecting loop, but not mutual inductance. Present scheme offers the advantages of a large and tunable level splitting in implementing the controlled-NOT (CNOT) operation. We calculate the switching probabilities of the coupled qubits in the CNOT operations and demonstrate that present CNOT gate can meet the criteria for the fault-tolerant quantum computing. We obtain the coupling strength as a function of the coupling energy of the Josephson junction and the length of the connecting loop which varies with selecting two qubits from the scalable design.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2004-09-24T06:29:02.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "josephson current qubits",
      "connecting loop",
      "three-josephson junction qubits",
      "mutual inductance",
      "scheme offers"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}