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Quantum criticality from Fisher information
Quantum Information Processing, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hongting Song +2 more
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Quantum Fisher Information and Uncertainty Relations
Letters in Mathematical Physics, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Quantum interference and Fisher information
Physics Letters A, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hradil, Z., Řeháček, J.
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Quantum Fisher Information of a 3-Qubit State
International Journal of Theoretical Physics, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiao-Jie Yi +2 more
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On the realization of quantum Fisher information
European Journal of Physics, 2017With special attention to the role of information theory in physical sciences we present analytical results for the coordinate- and momentum-space Fisher information of some important one-dimensional quantum systems which differ in spacing of their energy levels.
Aparna Saha +2 more
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Quantum Fisher information width in quantum metrology
Science China Physics, Mechanics & Astronomy, 2018In scenarios of quantum metrology, the unitary parametrization process often depends on space directions. How to characterize the sensitivity of parameter estimation to space directions is a natural question. We propose the concept of the quantum Fisher information (QFI) width, which is the difference between the maximum and minimum values of the QFI ...
Bo Liu +4 more
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Protecting Quantum Coherence and Quantum Fisher Information in Ohmic Reservoir
International Journal of Theoretical Physics, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiao-Zhi Liu +4 more
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Quantum Fisher information for superpositions of spin states
Quantum Information and Computation, 2010In terms of quantum Fisher information, a quantity $\chi^{2}$ was introduced by Pezz\'{e} and Smerzi, which is a multiparticle entanglement measure, and provides a necessary and sufficient condition for sub-shot-noise phase estimation sensitivity. We derive a general expression of $\chi ^{2}$ for arbitrary symmetric multiqubit states with nonzero mean ...
Heng-Na Xiong +3 more
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On Covariance and Quantum Fisher Information
Theory of Probability & Its Applications, 2009For a quantum state and a set of observables, we can construct an associated covariance matrix and a natural quantum Fisher information matrix. These two matrices characterize the uncertainty and information content of the observables in the relevant state. An inequality between these two matrices is established. This inequality may be interpreted as a
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Weyl Geometries, Fisher Information and Quantum Entropy in Quantum Mechanics
International Journal of Theoretical Physics, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fiscaletti, Davide, Licata, Ignazio
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