{
  "id": "1207.0088",
  "version": "v2",
  "published": "2012-06-30T12:50:42.000Z",
  "updated": "2012-07-03T10:16:59.000Z",
  "title": "Large-Scale Schrödinger-Cat States and Majorana Bound States in Coupled Circuit-QED Systems",
  "authors": [
    "Myung-Joong Hwang",
    "Mahn-Soo Choi"
  ],
  "comment": "5 pages; 2 figures; incorrect references corrected; typos corrected",
  "doi": "10.1103/PhysRevB.87.125404",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We have studied the low-lying excitations of a chain of coupled circuit-QED systems, and report several intriguing properties of its two nearly degenerate ground states. The ground states are Schr\\\"odinger cat states at a truly large scale, involving maximal entanglement between the resonator and the qubit, and are mathematically equivalent to Majorana bound states. With a suitable design of physical qubits, they are protected against local fluctuations and constitute a non-local qubit. Further, they can be probed and manipulated coherently by attaching an empty resonator to one end of the circuit-QED chain.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-07-03T10:16:59.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "42.50.-p",
      "73.21.-b"
    ],
    "keywords": [
      "majorana bound states",
      "coupled circuit-qed systems",
      "large-scale schrödinger-cat states",
      "degenerate ground states",
      "truly large scale"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Mar",
      "volume": 87,
      "number": 12,
      "pages": 125404
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1121060,
      "adsabs": "2013PhRvB..87l5404H"
    }
  }
}