{
  "id": "1905.12237",
  "version": "v1",
  "published": "2019-05-29T06:25:38.000Z",
  "updated": "2019-05-29T06:25:38.000Z",
  "title": "Detecting the universal fractional entropy of Majorana zero modes",
  "authors": [
    "Eran Sela",
    "Yuval Oreg",
    "Stephan Plugge",
    "Nikolaus Hartman",
    "Silvia Lüscher",
    "Joshua Folk"
  ],
  "comment": "7 pages, 5 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.supr-con"
  ],
  "abstract": "A pair of Majorana zero modes (MZMs) constitutes a nonlocal qubit whose entropy is $\\log 2$. Upon strongly coupling one of the constituent MZMs to a reservoir with a continuous density of states, a universal entropy change of $\\frac{1}{2}\\log 2$ is expected to be observed across an intermediate temperature plateau. We adapt the entropy-measurement scheme that was the basis of a recent experiment [Hartman et. al., Nat. Phys. 14, 1083 (2018)] to the case of a proximitized topological system hosting MZMs, and propose a method to measure this $\\frac{1}{2}\\log 2$ entropy change --- an unambiguous signature of the nonlocal nature of the topological state. This approach offers an experimental strategy to distinguish MZMs from non-topological states.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-05-29T06:25:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "majorana zero modes",
      "universal fractional entropy",
      "topological system hosting mzms",
      "intermediate temperature plateau",
      "universal entropy change"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}