Advances in quantum metrology

By Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone. 2011

3,588 citations recorded by the source corpus.

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 experiments. We then look at one of the major new trends of the field: analyses of the effects of noise and experimental imperfections.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/5115b3ba9e6b8fb68685bc50f303457564d4d993

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre (2014, background): “However, it can reach unity by either satisfying a phase matching condition that leads to re-emission in the backward propagation [4, 5], or by embedding the storage material into an impedancematched cavity [6, 7].”
Quantum-enhanced measurements without entanglement (2017, background): “One of the most typical applications of quantum metrology is the task of unitary parameter estimation, exemplified in particular by phase estimation (Giovannetti et al., 2006, 2011).”
Geometry of quantum phase transitions (2019, background): “Exploring this possibility plays a pivotal role in the current development of quantum technology [306, 307, 308, 309, 310, 311, 312, 313, 314, 315].”
Quantum limits in optical interferometry (2014, background): “More generally, the shot noise limit, sometimes referred to as the standard quantum limit, is valid for all N -photon separable states (Giovannetti et al., 2011; Pezzé and Smerzi, 2009), and going beyond this limit requires making use of inter-photon entanglement, see Sec.”