{
  "id": "0812.3015",
  "version": "v2",
  "published": "2008-12-16T10:03:39.000Z",
  "updated": "2008-12-18T08:07:25.000Z",
  "title": "Experimental test of nonclassicality criteria",
  "authors": [
    "T. Kiesel",
    "W. Vogel",
    "B. Hage",
    "J. DiGuglielmo",
    "A. Samblowski",
    "R. Schnabel"
  ],
  "comment": "6 pages, 2 figures",
  "doi": "10.1103/PhysRevA.79.022122",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We experimentally examine the nonclassical character of a class of non-Gaussian states known as phase-diffused squeezed states. These states may show no squeezing effect at all, and therefore provide an interesting example to test nonclassicality criteria. The characteristic function of the Glauber-Sudarshan representation (P function) proves to be a powerful tool to detect nonclassicality. Using this criterion we find that phase-diffused squeezed states are always nonclassical, even if the squeezing effect vanishes. Testing other criteria of nonclassicality based on higher-order squeezing and the positive semidefinitness of special matrices of normally ordered moments, it is found that these criteria fail to reveal the nonclassicality for some of the prepared phase-diffused squeezed states.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-12-18T08:07:25.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Wj",
      "42.50.Dv",
      "42.50.Xa"
    ],
    "keywords": [
      "experimental test",
      "phase-diffused squeezed states",
      "test nonclassicality criteria",
      "special matrices",
      "detect nonclassicality"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review A",
      "year": 2009,
      "month": "Feb",
      "volume": 79,
      "number": 2,
      "pages": "022122"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009PhRvA..79b2122K"
    }
  }
}