Quantum theory of phase estimation
By Luca Pezzè, Augusto Smerzi. 2014
165 citations recorded by the source corpus.
Advancements in physics are often motivated/accompanied by advancements in our precision measurements abilities. The current generation of atomic and optical interferometers is limited by shot noise, a fundamental limit when estimating a phase shift with classical light or uncorrelated atoms. In the last years, it has been clarified that the creation of special quantum correlations among particles, which will be called here useful entanglement, can strongly enhance the interferometric sensitivity. Pioneer experiments have already demonstrated the basic principles. We are probably at the verge of a second quantum revolution where quantum mechanics of many-body systems is exploited to overcome the limitations of classical technologies. This review illustrates the deep connection between entanglement and sub shot noise sensitivity.
View Paper: https://www.semanticscholar.org/paper/701b1b97405793d4c09ae05fbc458e19305dc105
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- Gerardo Adesso
- Daniel Braun
- Stefano Pirandola
- Alexander Streltsov
- Fabio Benatti
- Luca Pezzè
- Roberto Floreanini
- Augusto Smerzi
Citations in the corpus
- Colloquium: quantum coherence as a resource (2016, background): “This builds on previous results on detecting different classes of multipartite entanglement using the quantum Fisher information (Hyllus et al., 2012; Pezzé and Smerzi, 2009, 2014; Tóth, 2012; Tóth and Apellaniz, 2014).”
- Quantum metrology with nonclassical states of atomic ensembles (2016, background): “Hence they allow to calculate the optimal phase sensitivity of any given probe state and interferometer transformation (Helstrom, 1976; Holevo, 1982), for recent reviews see Giovannetti et al. (2011); Paris (2009); and Pezzè and Smerzi (2014).”
- Quantum-enhanced measurements without entanglement (2017, background): “The literature on the topic of quantum metrology is vast and for a general introduction we refer to the available reviews (Degen et al., 2016; Giovannetti et al., 2006; Paris, 2009; Pezzè and Smerzi, 2014; Pezzè et al., 2016; Tóth and Apellaniz, 2014; Wiseman and Milburn, 2009).”