{
  "id": "2407.16535",
  "version": "v1",
  "published": "2024-07-23T14:46:48.000Z",
  "updated": "2024-07-23T14:46:48.000Z",
  "title": "Microwave Signatures of Topological Superconductivity in Planar Josephson Junctions",
  "authors": [
    "Barış Pekerten",
    "David Brandão",
    "Bassel Heiba Elfeky",
    "Tong Zhou",
    "Jong E. Han",
    "Javad Shabani",
    "Igor Žutić"
  ],
  "comment": "To be published in Physical Review B as a Letter",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "Planar Josephson junctions provide a platform to host topological superconductivity which, through manipulating Majorana bound states (MBS), could enable fault-tolerant quantum computing. However, what constitutes experimental signatures of topological superconductivity and how MBS can be detected remains strongly debated. In addition to spurious effects that mimic MBS, there is a challenge to discern the inherent topological signals in realistic systems with many topologically-trivial Andreev bound states, determining the transport properties of Josephson junctions. Guided by the advances in microwave spectroscopy, we theoretically study Al/InAs-based planar Josephson junction embedded into a radio-frequency superconducting quantum interference device to identify microwave signatures of topological superconductivity. Remarkably, by exploring the closing and reopening of a topological gap, we show that even in a wide planar Josephson junction with many Andreev bound states, such a topological signature is distinguishable in the resonance frequency shift of a microwave drive and the ``half-slope'' feature of the microwave absorption spectrum. Our findings provide an important step towards experimental detection of non-Abelian statistics and implementing scalable topological quantum computing.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-07-23T14:46:48.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "topological superconductivity",
      "microwave signatures",
      "andreev bound states",
      "radio-frequency superconducting quantum interference device",
      "study al/inas-based planar josephson junction"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}