{
  "id": "1811.08682",
  "version": "v2",
  "published": "2018-11-21T10:59:34.000Z",
  "updated": "2019-05-15T17:48:55.000Z",
  "title": "Multielectron Ground State Electroluminescence",
  "authors": [
    "Mauro Cirio",
    "Nathan Shammah",
    "Neill Lambert",
    "Simone De Liberato",
    "Franco Nori"
  ],
  "comment": "32 pages (9+23), 9 figures (3+6)",
  "journal": "Phys. Rev. Lett. 122, 190403 (2019)",
  "doi": "10.1103/PhysRevLett.122.190403",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall"
  ],
  "abstract": "The ground state of a cavity-electron system in the ultrastrong coupling regime is characterized by the presence of virtual photons. If an electric current flows through this system, the modulation of the light-matter coupling induced by this non-equilibrium effect can induce an extra-cavity photon emission signal, even when electrons entering the cavity do not have enough energy to populate the excited states. We show that this ground-state electroluminescence, previously identified in a single-qubit system [Phys. Rev. Lett. 116, 113601 (2016)] can arise in a many-electron system. The collective enhancement of the light-matter coupling makes this effect, described beyond the rotating wave approximation, robust in the thermodynamic limit, allowing its observation in a broad range of physical systems, from a semiconductor heterostructure with flat-band dispersion to various implementations of the Dicke model.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2019-05-15T17:48:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "multielectron ground state electroluminescence",
      "extra-cavity photon emission signal",
      "electric current flows",
      "semiconductor heterostructure",
      "broad range"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 32,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}