Results 61 to 70 of about 142,025 (180)
QMetrology from QCosmology: Study with entangled two qubit open quantum system in De Sitter space
SciPost Physics Core, 2021 In this paper, our prime objective is to apply the techniques of parameter estimation theory and the concept of Quantum Metrology in the form of Fisher Information to investigate the role of certain physical quantities in the open quantum dynamics of ...
Sayantan Choudhury, Satyaki Chowdhury, Nitin Gupta, Abinash Swain
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Zeno dynamics in quantum open systems
, 2015 Quantum Zeno effect shows that frequent observations can slow down or even stop the unitary time evolution of an unstable quantum system. This effect can also be regarded as a physical consequence of the the statistical indistinguishability of ...
Fan, Heng, Zhang, Yu-Ran
core +2 more sources
Characterizing nonclassical correlations via local quantum Fisher information
, 2018 We define two ways of quantifying the quantum correlations based on quantum Fisher information (QFI) in order to study the quantum correlations as a resource in quantum metrology.
Kim, Sunho +3 more
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, 2017 We investigated quantum critical behaviours in the non-equilibrium steady state of a $XXZ$ spin chain with boundary Markovian noise using the Fisher information.
Marzolino, Ugo, Prosen, Tomaž
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A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance
, 2020 We derive criterion in the form of inequality based on quantum Fisher information and quantum variance to detect multipartite entanglement. It can be regarded as complementary of the well-established PPT criterion in the sense that it can also detect ...
Fei, Shao-Ming, Zhang, Qing-Hua
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Configuration Complexities of Hydrogenic Atoms
, 2009 The Fisher-Shannon and Cramer-Rao information measures, and the LMC-like or shape complexity (i.e., the disequilibrium times the Shannon entropic power) of hydrogenic stationary states are investigated in both position and momentum spaces.
A. Dembo +31 more
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Operational Interpretation of Quantum Fisher Information in Quantum Thermodynamics
Physical Review Letters, 2022 5 pages+24 pages of Supplementary Material. Some results were previously included in version 1 of arXiv:1805.01989 [quant-ph]
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A Fisher Information-Based Incompatibility Criterion for Quantum Channels
Entropy, 2022 We introduce a new incompatibility criterion for quantum channels based on the notion of (quantum) Fisher information. Our construction is based on a similar criterion for quantum measurements put forward by H. Zhu.
Qing-Hua Zhang, Ion Nechita
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Kind of entanglement that speeds up quantum evolution
, 2012 The "speed" of unitary quantum evolution was recently shown to be connected to entanglement in multipartite quantum systems. Here, we discuss a tighter version of the Mandelstam-Tamm uncertainty relation that depends on the Fisher information.
Fröwis, Florian
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Continuity of the quantum Fisher information [PDF]
Physical Review A, 2019 In estimating an unknown parameter of a quantum state the quantum Fisher information (QFI) is a pivotal quantity, which depends on the state and its derivate with respect to the unknown parameter. We prove the continuity property for the QFI in the sense that two close states with close first derivatives have close QFIs.
Rezakhani, A. T. +3 more
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