Heisenberg limit

In quantum metrology, and especially interferometry, the Heisenberg limit is the optimal rate at which the accuracy of a measurement can scale with the energy used in the measurement. Typically, this is the measurement of a phase (applied to one arm of a beam-splitter) and the energy is given by the number of photons used in an interferometer.

Although some claim to have broken the Heisenberg limit, this reflects disagreement on the definition of the scaling resource.[1][2] Suitably defined, the Heisenberg limit is a consequence of the basic principles of quantum mechanics and cannot be beaten.

References

  1. ↑ Optimality of the Heisenberg limit in quantum metrology (PDF), University of Sheffield, 2010, archived from the original (PDF) on November 3, 2013, retrieved April 12, 2016
  2. ↑ Giovannetti, V.; Lloyd, S.; MacCone, L. (2011). "Advances in quantum metrology". Nature Photonics. 5 (4): 222. doi:10.1038/nphoton.2011.35.; arXiv
This article is issued from Wikipedia - version of the 5/7/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.