{
  "id": "1307.1198",
  "version": "v4",
  "published": "2013-07-04T04:10:56.000Z",
  "updated": "2013-12-12T09:37:26.000Z",
  "title": "Proposal for an on-demand source of polarized electrons into the edges of a topological insulator",
  "authors": [
    "Andreas Inhofer",
    "Dario Bercioux"
  ],
  "comment": "10 pages + 7 figures",
  "journal": "Physical Review B 88, 235412 (2013)",
  "doi": "10.1103/PhysRevB.88.235412",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We propose a device that allows for the emission of pairs of spin-polarized electrons into the edge-states of a two dimensional topological insulator. Charge and spin emission is achieved using a periodically driven quantum dot weakly coupled to the edge states of the host topological insulator. We present calculations of the emitted time-dependent charge and spin currents of such a dynamical scatterer using the Floquet scattering matrix approach. Experimental signatures of spin-polarized two-particle emission can be found in noise measurements. Here a new form of noise suppression, named $\\mathbb{Z}_2$--antibunching, is introduced. Additionally, we propose a set-up in which entanglement of the emitted electrons is generated. This entanglement is based on a post-selection procedure and becomes manifest in a violation of a Clauser-Horne-Shimony-Holt inequality.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2013-12-12T09:37:26.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "72.10.-d",
      "03.67.Bg",
      "73.23.-b",
      "85.35.Gv"
    ],
    "keywords": [
      "topological insulator",
      "on-demand source",
      "polarized electrons",
      "quantum dot",
      "floquet scattering matrix approach"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review B",
      "year": 2013,
      "month": "Dec",
      "volume": 88,
      "number": 23,
      "pages": 235412
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2013PhRvB..88w5412I"
    }
  }
}