{
  "id": "1102.2318",
  "version": "v1",
  "published": "2011-02-11T10:32:58.000Z",
  "updated": "2011-02-11T10:32:58.000Z",
  "title": "Advances in Quantum Metrology",
  "authors": [
    "Vittorio Giovannetti",
    "Seth Lloyd",
    "Lorenzo Maccone"
  ],
  "comment": "10 pages, 3 figures. This is the very preliminary version of a review article on quantum metrology. More recent versions of the manuscript will be posted asap",
  "journal": "Nature Photonics 5, 222 (2011)",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall",
    "math-ph",
    "math.MP"
  ],
  "abstract": "In classical estimation theory, the central limit theorem implies that the statistical error in a measurement outcome can be reduced by an amount proportional to n^(-1/2) by repeating the measures n times and then averaging. Using quantum effects, such as entanglement, it is often possible to do better, decreasing the error by an amount proportional to 1/n. Quantum metrology is the study of those quantum techniques that allow one to gain advantages over purely classical approaches. In this review, we analyze some of the most promising recent developments in this research field. Specifically, we deal with the developments of the theory and point out some of the new experiments. Then we look at one of the main new trends of the field, the analysis of how the theory must take into account the presence of noise and experimental imperfections.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-02-11T10:32:58.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quantum metrology",
      "central limit theorem implies",
      "experimental imperfections",
      "measurement outcome",
      "proportional"
    ],
    "tags": [
      "review article",
      "journal article",
      "famous paper"
    ],
    "publication": {
      "doi": "10.1038/nphoton.2011.35",
      "journal": "Nature Photonics",
      "year": 2011,
      "month": "Apr",
      "volume": 5,
      "number": 4,
      "pages": 222
    },
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011NaPho...5..222G"
    }
  }
}