{
  "id": "2409.05594",
  "version": "v1",
  "published": "2024-09-09T13:23:44.000Z",
  "updated": "2024-09-09T13:23:44.000Z",
  "title": "Super-Poissonian noise from quasiparticle poisoning in electron transport through a pair of Majorana bound states",
  "authors": [
    "Florinda Viñas Boström",
    "Patrik Recher"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Topological qubits based on non-abelian Majorana bound states (MBSs) are protected by parity which is challenged by quasiparticle poisoning (QPP). In this work, we show how QPP affects transport through a pair of coupled MBSs weakly connected to two current leads, using an open system approach and full counting statistics. We find that the correct low-energy physics requires to include next to leading order tunneling events in the coupling to the leads. In particular, our results show that QPP causes super-Poissonian local shot noise with a Fano factor that diverges with decreasing bias voltage, while the current and the non-local (cross-)noise are only little affected. We explain that these features are a direct consequence of the nature of MBSs being their own antiparticle making noise measurements a viable tool to search for MBSs in the presence of QPP.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-09-09T13:23:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quasiparticle poisoning",
      "super-poissonian noise",
      "electron transport",
      "non-abelian majorana bound states",
      "super-poissonian local shot noise"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}