{
  "id": "2210.02749",
  "version": "v1",
  "published": "2022-10-06T08:37:02.000Z",
  "updated": "2022-10-06T08:37:02.000Z",
  "title": "Hinge States of Second-Order Topological Insulators as a Mach-Zehnder Interferometer",
  "authors": [
    "Adam Yanis Chaou",
    "Piet W. Brouwer",
    "Nicholas Sedlmayr"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Three-dimensional higher-order topological insulators can have topologically protected chiral modes propagating on their hinges. Hinges with two co-propagating chiral modes can serve as a \"beam splitter\" between hinges with only a single chiral mode. Here we show how such a crystal, with Ohmic contacts attached to its hinges, can be used to realize a Mach-Zehnder interferometer. We present concrete calculations for a lattice model of a first-order topological insulator in a magnetic field, which, for a suitable choice of parameters, is an extrinsic second-order topological insulator with the required configuration of chiral hinge modes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-10-06T08:37:02.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "mach-zehnder interferometer",
      "hinge states",
      "protected chiral modes propagating",
      "single chiral mode",
      "extrinsic second-order topological insulator"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}