{
  "id": "quant-ph/9912072",
  "version": "v3",
  "published": "1999-12-15T03:32:52.000Z",
  "updated": "2000-04-05T02:51:19.000Z",
  "title": "Nonclassical correlations of photon number and field components in the vacuum state",
  "authors": [
    "Holger F. Hofmann",
    "Takayoshi Kobayashi",
    "Akira Furusawa"
  ],
  "comment": "13 pages, 3 figures, corrections of omissions in equations (6) and (25). To be published in Phys. Rev. A",
  "journal": "Phys. Rev. A 62, 013806 (2000)",
  "doi": "10.1103/PhysRevA.62.013806",
  "categories": [
    "quant-ph",
    "physics.optics"
  ],
  "abstract": "It is shown that the quantum jumps in the photon number n from zero to one or more photons induced by backaction evasion quantum nondemolition measurements of a quadrature component x of the vacuum light field state are strongly correlated with the quadrature component measurement results. This correlation corresponds to the operator expectation value <xnx> which is equal to one fourth for the vacuum even though the photon number eigenvalue is zero. Quantum nondemolition measurements of a quadrature component can thus provide experimental evidence of the nonclassical operator ordering dependence of the correlations between photon number and field components in the vacuum state.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2000-04-05T02:51:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "photon number",
      "field components",
      "vacuum state",
      "nonclassical correlations",
      "backaction evasion quantum nondemolition measurements"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}