{
  "id": "1308.1207",
  "version": "v1",
  "published": "2013-08-06T08:43:06.000Z",
  "updated": "2013-08-06T08:43:06.000Z",
  "title": "Electron-Hole Entanglement in a Quantum Spin Hall Insulator",
  "authors": [
    "Koji Sato",
    "Mircea Trif",
    "Yaroslav Tserkovnyak"
  ],
  "comment": "4 pages main article + 3 pages supplement, 2 figures",
  "categories": [
    "cond-mat.mes-hall",
    "quant-ph"
  ],
  "abstract": "We demonstrate that entangled electron-hole pairs can be produced and detected in a quantum spin Hall insulator with a constriction that allows for a weak inter-edge tunneling. A violation of a Bell inequality, which can be constructed in terms of low-frequency nonlocal current-current correlations, serves as a detection of the entanglement. We show that the maximum violation of a Bell inequality can be naturally achieved in this setup, without a need to fine tune tunneling parameters. This may provide a viable route to producing spin entanglement in the absence of any correlations and pairing, where spin-to-charge conversion is enabled by the helical edge structure of a quantum spin Hall insulator.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-08-06T08:43:06.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "73.23.-b",
      "03.65.Ud",
      "73.50.Td"
    ],
    "keywords": [
      "quantum spin hall insulator",
      "electron-hole entanglement",
      "low-frequency nonlocal current-current correlations",
      "bell inequality",
      "fine tune tunneling parameters"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1103/PhysRevB.89.115404",
      "journal": "Physical Review B",
      "year": 2014,
      "month": "Mar",
      "volume": 89,
      "number": 11,
      "pages": 115404
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvB..89k5404S"
    }
  }
}