{
  "id": "quant-ph/0702138",
  "version": "v1",
  "published": "2007-02-14T07:25:23.000Z",
  "updated": "2007-02-14T07:25:23.000Z",
  "title": "Quantum non-demolition measurement of photon-arrival using an atom-cavity system",
  "authors": [
    "Kunihiro Kojima",
    "Akihisa Tomita"
  ],
  "comment": "12pages, 4figures, Submitted to Phys. Rev. A",
  "journal": "Phys. Rev. A 75, 032320 (2007)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "A simple and efficient quantum non-demolition measurement (QND) scheme is proposed in which the arrival of a signal photon is detected without affecting the qubit state. The proposed QND scheme functions even if the ancillary photon is replaced with weak light composed of vacuum and one-photon states. Although the detection scheme is designed for entanglement sharing applications, it is also suitable for general purification of a single photon state.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-02-14T07:25:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "atom-cavity system",
      "efficient quantum non-demolition measurement",
      "photon-arrival",
      "qnd scheme functions",
      "single photon state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2007quant.ph..2138K"
    }
  }
}