{
  "id": "1312.7612",
  "version": "v1",
  "published": "2013-12-30T01:46:55.000Z",
  "updated": "2013-12-30T01:46:55.000Z",
  "title": "Photon emission via vacuum-dressed intermediate states under ultrastrong coupling",
  "authors": [
    "Jin-Feng Huang",
    "C. K. Law"
  ],
  "comment": "9 pages, 8 figures",
  "journal": "Phys. Rev. A 89, 033827 (2014)",
  "doi": "10.1103/PhysRevA.89.033827",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We investigate theoretically quantum effects of a cavity-atom system in which the upper two levels of a cascade-type three-level atom interact with a cavity field mode in the ultrastrong coupling regime. By exploiting the virtual photons carried by atom-cavity dressed states, we indicate how two external driving fields induce Raman transitions such that a continuous conversion of virtual photons into real photons can be achieved with a high probability. We present analytical and numerical solutions of the system. In addition, we show that the converted photons exhibit a bunching behavior in the steady state. Our scheme demonstrates that atom-cavity dressed states in the ultrastrong coupling regime can serve as intermediate states to invoke nonlinear optical processes.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-12-30T01:46:55.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "42.50.Pq",
      "42.50.Ar",
      "03.65.Yz"
    ],
    "keywords": [
      "vacuum-dressed intermediate states",
      "photon emission",
      "fields induce raman transitions",
      "ultrastrong coupling regime",
      "atom-cavity dressed states"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2014,
      "month": "Mar",
      "volume": 89,
      "number": 3,
      "pages": "033827"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014PhRvA..89c3827H"
    }
  }
}