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Fisher Information as General Metrics of Quantum Synchronization
Entropy, 2023 Quantum synchronization has emerged as a crucial phenomenon in quantum nonlinear dynamics with potential applications in quantum information processing. Multiple measures for quantifying quantum synchronization exist.
Yuan Shen +3 more
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Robust Estimation of the Quantum Fisher Information on a Quantum Processor
PRX QuantumWe present the experimental measurement, on a quantum processor, of a series of polynomial lower bounds that converge to the quantum Fisher information (QFI), a fundamental quantity for certifying multipartite entanglement that is useful for metrological
Vittorio Vitale +5 more
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Variational quantum algorithm for estimating the quantum Fisher information [PDF]
Physical Review Research, 2022 The quantum Fisher information (QFI) quantifies the ultimate precision of estimating a parameter from a quantum state and can be regarded as a reliability measure of a quantum system as a quantum sensor.
Jacob L. Beckey +3 more
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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
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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Fisher Information in Noisy Intermediate-Scale Quantum Applications [PDF]
Quantum, 2021 The recent advent of noisy intermediate-scale quantum devices, especially near-term quantum computers, has sparked extensive research efforts concerned with their possible applications.
Johannes Jakob Meyer
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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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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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