{
  "id": "quant-ph/0703079",
  "version": "v2",
  "published": "2007-03-09T17:41:28.000Z",
  "updated": "2007-03-27T15:20:35.000Z",
  "title": "Phase-covariant cloning of coherent states",
  "authors": [
    "Massimiliano F. Sacchi"
  ],
  "comment": "6 pages, 2 figures; updated references and minor corrections; in press on Physical Review A",
  "journal": "Phys. Rev. A 75, 042328 (2007)",
  "doi": "10.1103/PhysRevA.75.042328",
  "categories": [
    "quant-ph"
  ],
  "abstract": "We consider the problem of phase-covariant cloning for coherent states. We show that an experimental scheme based on ideal phase measurement and feedforward outperforms the semiclassical procedure of ideal phase measurement and preparation in terms of fidelity. A realistic scheme where the ideal phase measurement is replaced with double-homodyne detection is shown to be unable to overcome the semiclassical cloning strategy. On the other hand, such a realistic scheme is better than semiclassical cloning based on double-homodyne phase measurement and preparation.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2007-03-27T15:20:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "coherent states",
      "ideal phase measurement",
      "phase-covariant cloning",
      "realistic scheme",
      "double-homodyne phase measurement"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}