{
  "id": "1712.08459",
  "version": "v1",
  "published": "2017-12-22T14:21:28.000Z",
  "updated": "2017-12-22T14:21:28.000Z",
  "title": "Observation of the 4$π$-periodic Josephson effect in InAs nanowires",
  "authors": [
    "Dominique Laroche",
    "Daniël Bouman",
    "David J. van Woerkom",
    "Alex Proutski",
    "Chaitanya Murthy",
    "Dmitry I. Pikulin",
    "Chetan Nayak",
    "Ruben J. J. van Gulik",
    "Jesper Nygård",
    "Peter Krogstrup",
    "Leo P. Kouwenhoven",
    "Attila Geresdi"
  ],
  "comment": "Supplementary Information is available as ancillary file, raw data and calculations can be downloaded from http://dx.doi.org/10.4121/uuid:1f936840-5bc2-40ca-8c32-1797c12cacb1",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance by encoding quantum information in the non-local charge parity states of semiconductor nanowire networks in the topological superconductor regime. Thus far, experimental studies of MZMs chiefly relied on single electron tunneling measurements which leads to decoherence of the quantum information stored in the MZM. As a next step towards topological quantum computation, charge parity conserving experiments based on the Josephson effect are required, which can also help exclude suggested non-topological origins of the zero bias conductance anomaly. Here we report the direct measurement of the Josephson radiation frequency in InAs nanowires with epitaxial aluminium shells. For the first time, we observe the $4\\pi$-periodic Josephson effect above a magnetic field of $\\approx 200\\,$mT, consistent with the estimated and measured topological phase transition of similar devices.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-22T14:21:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "periodic josephson effect",
      "inas nanowires",
      "non-abelian majorana zero modes",
      "quantum information",
      "non-local charge parity states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}