Results 81 to 90 of about 142,025 (180)
Results in Physics, 2017 We consider a quantum system of an atom-atom interaction in the presence of two external magnetic and classical fields in x, and z directions. The dynamical behavior of single atom quantum quantifiers such as the atomic Wehrl entropy, atomic Fisher ...
Hanaa H. Abu-Zinadah, Sayed Abdel-Khalek
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Fisher-information susceptibility for multiparameter quantum estimation
Physical Review ANoise affects the performance of quantum technologies, hence the importance of elaborating operative figures of merit that can capture its impact in exact terms. In quantum metrology, the introduction of the Fisher information measurement noise susceptibility now allows to quantify the robustness of measurement for single-parameter estimation.
Francesco Albarelli +3 more
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Quantum parameter estimation with many-body fermionic systems and application to the Hall effect
SciPost PhysicsWe calculate the quantum Fisher information for a generic many-body fermionic system in a pure state depending on a parameter. We discuss the situations where the parameter is imprinted in the basis states, in the state coefficients, or both. In the case
Olivier Giraud, Mark-Oliver Goerbig, Daniel Braun
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Quantum Fisher information and its dynamical nature
Reports on Progress in PhysicsAbstract The importance of the Fisher information metrics and its quantum generalisations is testified by the number of applications that this has in very different fields, ranging from hypothesis testing to metrology, passing through thermodynamics.
Matteo Scandi +3 more
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Mutual information bounded by Fisher information
Physical Review ResearchWe derive a general upper bound to mutual information in terms of the Fisher information. The bound may be further used to derive a lower bound for the Bayesian quadratic cost. These two provide alternatives to other inequalities in the literature (e.g.,
Wojciech Górecki +3 more
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Quantum Enhanced Sensitivity through Many-Body Bloch Oscillations [PDF]
QuantumWe investigate the sensing capacity of non-equilibrium dynamics in quantum systems exhibiting Bloch oscillations. By focusing on the resource efficiency of the probe, quantified by quantum Fisher information, we find different scaling behaviors in two ...
Hassan Manshouri +4 more
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Entanglement criteria based on quantum Fisher information
Physics Letters A20 pages, 3 figures.
Liu, Ao-Xiang +2 more
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Quantum Fisher information of two atoms with dipole-dipole interaction under the environment of phase noise lasers. [PDF]
Sci Rep, 2021 Chen Y, Long ZW, He Z, Ji ST.
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Precision protection through cosmic string in quantum metrology
European Physical Journal C: Particles and Fields, 2020 The dynamics of the quantum Fisher information of the parameters of the initial atomic state and atomic transition frequency is studied, in the framework of open quantum systems, for a static polarizable two-level atom coupled in the multipolar scheme to
Yao Jin
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