Results 11 to 20 of about 25,447 (255)
Remote State Design for Efficient Quantum Metrology with Separable and Non-Teleporting States
Quantum Reports, 2021 Measurements leading to the collapse of states and the non-local quantum correlations are the key to all applications of quantum mechanics as well as in the studies of quantum foundation.
Rahul Raj +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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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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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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RLD Fisher information bound for multiparameter estimation of quantum channels
New Journal of Physics, 2021 One of the fundamental tasks in quantum metrology is to estimate multiple parameters embedded in a noisy process, i.e. a quantum channel. In this paper, we study fundamental limits to quantum channel estimation via the concept of amortization and the ...
Vishal Katariya, Mark M Wilde
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Quantum Wasserstein distance based on an optimization over separable states [PDF]
Quantum, 2023 We define the quantum Wasserstein distance such that the optimization of the coupling is carried out over bipartite separable states rather than bipartite quantum states in general, and examine its properties. Surprisingly, we find that the self-distance
Géza Tóth, József Pitrik
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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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Quantum Reservoir Parameter Estimation via Fisher Information
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022 In this study, we show that as a result of weak interaction of different information environments structured with a single probe qubit, these environments can perform binary classification of the information they contain.
Deniz Türkpençe, Ufuk Korkmaz
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Quantifying quantum-amplified metrology via Fisher information
Physical Review Research, 2022 We present a unified framework, based on quantum metrology concepts, for defining and quantifying deterministic noiseless quantum amplification of parameter-dependent processes, which plays an important role in increasing the precision of quantum sensing.
G. S. Agarwal, L. Davidovich
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Steered quantum coherence and quantum Fisher information in spin-chain system
Results in Physics, 2023 In this paper, we investigate steered quantum coherence, i.e., the l1 norm of steered coherence and the relative entropy of steered coherence, and the quantum Fisher information in the Gibbs state of two-qubit XXZ systems.
Biao-Liang Ye +2 more
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