{
  "id": "quant-ph/0401147",
  "version": "v2",
  "published": "2004-01-23T18:31:27.000Z",
  "updated": "2004-01-24T20:26:43.000Z",
  "title": "Single-Photon Generation from Stored Excitation in an Atomic Ensemble",
  "authors": [
    "C. W. Chou",
    "S. V. Polyakov",
    "A. Kuzmich",
    "H. J. Kimble"
  ],
  "comment": "5 pages, 4 figures",
  "doi": "10.1103/PhysRevLett.92.213601",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Single photons are generated from an ensemble of cold Cs atoms via the protocol of Duan et al. [Nature \\textbf{414}, 413 (2001)]. Conditioned upon an initial detection from field 1 at 852 nm, a photon in field 2 at 894 nm is produced in a controlled fashion from excitation stored within the atomic ensemble. The single-quantum character of the field 2 is demonstrated by the violation of a Cauchy-Schwarz inequality, namely $w(1_{2},1_{2}|1_{1})=0.24\\pm 0.05\\ngeq 1$, where $w(1_{2},1_{2}|1_{1})$ describes detection of two events $(1_{2},1_{2})$ conditioned upon an initial detection $1_{1}$, with $w\\to 0$ for single photons.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2004-01-24T20:26:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "atomic ensemble",
      "single-photon generation",
      "stored excitation",
      "single photons",
      "initial detection"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}