General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology

By B. Escher, R. L. D. M. Filho, L. Davidovich. 2011

842 citations recorded by the source corpus.

Quantum strategies can help to make parameter-estimation schemes more precise, but for noisy processes it is typically not known how large that improvement may be. Here, a universal quantum bound is derived for the error in the estimation of parameters that characterize dynamical processes.

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

View Paper: https://www.semanticscholar.org/paper/27611a60195b45246a642b4f609a2270226bf92f

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Macroscopic quantum states: Measures, fragility, and implementations (2017, background): “34 Demkowicz-Dobrzanski et al. (2012); Escher et al. (2011); Fujiwara and Imai (2008); Sekatski et al. (2016) 35 A. Lopez Incera et al., in preparation.”
Silicon carbide color centers for quantum applications (2020, background): “Quantum metrology relies on quantum theory to describe the physical systems [173] and to provide high-resolution”
A quantum network of clocks (2013, background): “(4) results from fundamental quantum metrological bounds [19], and represents the best conceivable clock stability in the presence of individual particle decoherence which, in a network, can only be achieved via cooperation.”
Quantum Optical Technologies for Metrology, Sensing, and Imaging (2014, background): “noise, etc, are handled in optical metrology. A large body of work in the recent literature has dealt with identifying useful lower bounds on phase precision in the presence of such decoherence [40], [42]. Further, optimal quantum states of light that attain these bounds in the presence of decoheren”
The role of quantum coherence in non-equilibrium entropy production (2017, background): “On the other hand, a characterization of irreversible entropy could help us designing thermodynamically efficient quantum technologies [6, 7].”
Squeezed states of light and their applications in laser interferometers (2016, background): “Getting the pump power closer to the threshold could even reduce the observed squeeze factor if a fluctuating squeeze angle projects anti-squeezing into the observed quadrature amplitude [Franzen et al. (2006); Suzuki et al. (2006); Dwyer et al.”
Quantum limits in optical interferometry (2014, methodology): “We should note that methods of (Escher et al., 2011; Knysh et al., 2014) can also be successfully applied to uncorrelated noise models.”
Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations (2019, neutral): “Proposals for novel quantum information processing techniques often rely on a quantum network [8–12], linking together multiple qubits or groups of qubits to enable quantum-secure communication [13, 14], novel metrology techniques [15, 16], or distributed quantum computing [17].”