Results 11 to 20 of about 142,025 (180)
Broadcasting Quantum Fisher Information [PDF]
Physical Review A, 2013 It is well known that classical information can be cloned, but non-orthogonal quantum states cannot be cloned, and non-commuting quantum states cannot be broadcast.
A. Fujiwara +8 more
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Introduction to quantum Fisher information [PDF]
Quantum Probability and Related Topics, 2010 The subject of this paper is a mathematical transition from the Fisher information of classical statistics to the matrix formalism of quantum theory. If the monotonicity is the main requirement, then there are several quantum versions parametrized by a ...
Ghinea, Catalin, Petz, Denes
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Canonical Energy is Quantum Fisher Information [PDF]
Journal of High Energy Physics, 2016 In quantum information theory, Fisher Information is a natural metric on the space of perturbations to a density matrix, defined by calculating the relative entropy with the unperturbed state at quadratic order in perturbations. In gravitational physics,
Lashkari, Nima, Van Raamsdonk, Mark
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Maximal quantum Fisher information matrix
New Journal of Physics, 2017 We study the existence of the maximal quantum Fisher information matrix in the multi-parameter quantum estimation, which bounds the ultimate precision limit.
Yu Chen, Haidong Yuan
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Covariance and Fisher information in quantum mechanics [PDF]
Journal of Physics A: Mathematical and General, 2001 Variance and Fisher information are ingredients of the Cramer-Rao inequality. We regard Fisher information as a Riemannian metric on a quantum statistical manifold and choose monotonicity under coarse graining as the fundamental property of variance and ...
Amari S +18 more
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Fisher information in quantum statistics [PDF]
Journal of Physics A: Mathematical and General, 2000 Braunstein and Caves (1994) proposed to use Helstrom's {\em quantum information} number to define, meaningfully, a metric on the set of all possible states of a given quantum system.
Barndorff-Nielsen, O. E., Gill, R. D.
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Quantifying quantum coherence with quantum Fisher information. [PDF]
Sci Rep, 2017 AbstractQuantum coherence is one of the old but always important concepts in quantum mechanics, and now it has been regarded as a necessary resource for quantum information processing and quantum metrology. However, the question of how to quantify the quantum coherence has just been paid the attention recently (see, e.g., Baumgratz et al.
Feng XN, Wei LF.
europepmc +4 more sources
Fisher-Shannon product and quantum revivals in wavepacket dynamics [PDF]
Physics Letters A, 2014 We show the usefulness of the Fisher-Shannon information product in the study of the sequence of collapses and revivals that take place along the time evolution of quantum wavepackets.
García, T. +2 more
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Sub-quantum Fisher information [PDF]
Quantum Science and Technology, 2021 The Quantum Fisher Information (QFI) plays a crucial role in quantum information theory and in many practical applications such as quantum metrology. However, computing the QFI is generally a computationally demanding task. In this work we analyze a lower bound on the QFI which we call the sub-Quantum Fisher Information (sub-QFI).
M Cerezo +3 more
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Quantum Fisher Information from Randomized Measurements [PDF]
Physical Review Letters, 2021 The quantum Fisher information (QFI) is a fundamental quantity of interest in many areas from quantum metrology to quantum information theory. It can in particular be used as a witness to establish the degree of multi-particle entanglement in quantum many-body-systems.
Aniket Rath +3 more
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