Results 11 to 20 of about 27,027 (257)
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.
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Sub-quantum Fisher information [PDF]
Quantum Science and Technology, 2021 Abstract 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.
M Cerezo +3 more
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Generalized measure of quantum Fisher information [PDF]
Physical Review A, 2021 In this work, we present a lower bound on the quantum Fisher information (QFI) which is efficiently computable on near-term quantum devices. This bound itself is of interest, as we show that it satisfies the canonical criteria of a QFI measure. Specifically, it is essentially a QFI measure for subnormalized states, and hence it generalizes the standard
Akira Sone +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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Uncertainty principle and quantum Fisher information [PDF]
Annals of the Institute of Statistical Mathematics, 2006 We show that an inequality recently proved by Kosaki and Yanagi-Furuichi-Kuriyama [arXiv:quant-ph/0501152] has a natural geometric interpretation in terms of monotone metrics associated to Wigner-Yanase-Dyson information. Moreover we give a counterexample showing that the inequality does not hold for every monotone metric of this type.
Gibilisco, Paolo, Isola, Tommaso
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INTRODUCTION TO QUANTUM FISHER INFORMATION [PDF]
Quantum Probability and Related Topics, 2011 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 function. In physical applications the minimal is the most popular.
Petz, Denes, Ghinea, Catalin
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Fisher Information Universally Identifies Quantum Resources [PDF]
Physical Review Letters, 2021 5+6 ...
Kok Chuan Tan +2 more
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Inequalities for quantum Fisher information [PDF]
Proceedings of the American Mathematical Society, 2008 In 2003 Luo proved an inequality relating the Wigner-Yanase information and the $SLD$-information. In this paper we prove that Luo's inequality is a particular case of a general inequality which holds for any regular quantum Fisher information. Moreover we show that this general inequality is a consequence of the Kubo-Ando inequality that states that ...
GIBILISCO, PAOLO +2 more
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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. We conceive a scenario in which the object we want to broadcast is the statistical distinguishability, as quantified by quantum Fisher information, about a signal parameter encoded in ...
Lu, X.-M. +4 more
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Canonical energy is quantum Fisher information [PDF]
Journal of High Energy Physics, 2016 26 pages, 1 ...
Lashkari, Nima, Van Raamsdonk, Mark
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