{
  "id": "1906.01179",
  "version": "v1",
  "published": "2019-06-04T03:27:45.000Z",
  "updated": "2019-06-04T03:27:45.000Z",
  "title": "Phase signature of topological transition in Josephson Junctions",
  "authors": [
    "William Mayer",
    "Matthieu C. Dartiailh",
    "Joseph Yuan",
    "Kaushini S. Wickramasinghe",
    "Alex Matos-Abiague",
    "Igor Žutić",
    "Javad Shabani"
  ],
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.supr-con"
  ],
  "abstract": "Topological superconductivity hosts exotic quasi-particle excitations including Majorana bound states which hold promise for fault-tolerant quantum computing. The theory predicts emergence of Majorana bound states is accompanied by a topological phase transition. We show experimentally in epitaxial Al/InAs Josephson junctions a transition between trivial and topological superconductivity. We observe a minimum of the critical current at the topological transition, indicating a closing and reopening of the supercondcuting gap induced in InAs, with increasing magnetic field. By embedding the Josephson junction in a phase-sensitive loop geometry, we measure a $\\pi$-jump in the superconducting phase across the junction when the system is driven through the topological transition. These findings reveal a versatile two-dimensional platform for scalable topological quantum computing.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-06-04T03:27:45.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "topological transition",
      "phase signature",
      "majorana bound states",
      "superconductivity hosts exotic quasi-particle excitations",
      "topological superconductivity hosts exotic quasi-particle"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}