Advances in quantum metrology

  title={Advances in quantum metrology},
  author={Vittorio Giovannetti and Seth Lloyd and Lorenzo Maccone},
  journal={Nature Photonics},
The statistical error in any estimation can be reduced by repeating the measurement and averaging the results. The central limit theorem implies that the reduction is proportional to the square root of the number of repetitions. Quantum metrology is the use of quantum techniques such as entanglement to yield higher statistical precision than purely classical approaches. In this Review, we analyse some of the most promising recent developments of this research field and point out some of the new… 

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