Quantum Fisher Information Matrix in Critical System with Topological Characterization
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-021-04847-4
Abstract: We explore quantum multi-parameter estimation, based on quantum Fisher information matrix (QFIM), in an extended anisotropic XY spin chain associated with non-trivial topological characterization driven by varying system parameters (i.e., magnetic field λ, the anisotropic… read more here.
Keywords: topological characterization; information matrix; fisher information; quantum fisher ... See more keywords
Quantum Fisher Information and Tomographic Entropy of a Single Qubit in Excited Binomial and Negative Binomial Distributions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Russian Laser Research"
DOI: 10.1007/s10946-019-09806-3
Abstract: We model the interaction between a qubit and optical radiation field (ORF) using an excited binomial distribution (EBD) and excited negative binomial distribution (ENBD). The explicit form of the density matrix of the qubit–ORF system… read more here.
Keywords: quantum fisher; excited binomial; fisher information; tomographic entropy ... See more keywords
Quantum Fisher information of atomic system interacting with a single cavity mode in the presence of Kerr medium
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-39183-5
Abstract: The quantum Fisher information of an atomic system interacting with a single cavity mode in the presence of Kerr medium is discussed. It is shown that quantum Fisher information for an initial separable atomic system… read more here.
Keywords: fisher information; atomic system; kerr medium; quantum fisher ... See more keywords
How the Relativistic Motion Affect Quantum Fisher Information and Bell Non-locality for Multipartite state
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DOI: 10.1038/srep38456
Abstract: In this work, the quantum fisher information (QFI) and Bell non-locality of a multipartite fermionic system are investigated. Unlike the currently existing research of QFI, we focus our attention on the differences between quantum fisher… read more here.
Keywords: relativistic motion; quantum fisher; fisher information; locality ... See more keywords
The effects of vacuum fluctuations on teleportation of quantum Fisher information
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/srep40193
Abstract: The teleported quantum Fisher information of the phase parameter of atomic state is studied in consideration of vacuum fluctuations. Our results show that the teleported information is determined by the wavelength of the atoms as… read more here.
Keywords: information; quantum fisher; fisher information; vacuum fluctuations ... See more keywords
Quantum Fisher information matrix and multiparameter estimation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ab5d4d
Abstract: Quantum Fisher information matrix (QFIM) is a core concept in theoretical quantum metrology due to the significant importance of quantum Cram\'{e}r-Rao bound in quantum parameter estimation. However, studies in recent years have revealed wide connections… read more here.
Keywords: quantum fisher; mechanics; fisher information; estimation ... See more keywords
Does large quantum Fisher information imply Bell correlations?
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.040101
Abstract: The quantum Fisher information (QFI) of certain multipartite entangled quantum states is larger than what is reachable by separable states, providing a metrological advantage. Are these nonclassical correlations strong enough to potentially violate a Bell… read more here.
Keywords: bell inequality; quantum fisher; bell correlations; fisher information ... See more keywords
Dynamics of coherence: Maximal quantum Fisher information versus Loschmidt echo
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.024304
Abstract: We consider the dynamics of maximal quantum Fisher information (MQFI) after sudden quenches for the one-dimensional transverse-field Ising model. Our results show, the same as Loschmidt echo, that there is a universality for the revival… read more here.
Keywords: quantum; quantum fisher; fisher information; maximal quantum ... See more keywords
Multipartite entanglement and quantum Fisher information in conformal field theories
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review D"
DOI: 10.1103/physrevd.96.126007
Abstract: Bipartite entanglement entropy of a segment with the length $l$ in $1+1$ dimensional conformal field theories (CFT) follows the formula $S=\frac{c}{3}\ln l+\gamma$, where $c$ is the central charge of the CFT and $\gamma$ is a… read more here.
Keywords: quantum fisher; fisher information; conformal field; entanglement ... See more keywords
Symmetries of Quantum Fisher Information as Parameter Estimator for Pauli Channels under Indefinite Causal Order
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14091813
Abstract: Quantum Fisher Information is considered in Quantum Information literature as the main resource to determine a bound in the parametric characterization problem of a quantum channel by means of probe states. The parameters characterizing a… read more here.
Keywords: information; quantum; pauli channels; quantum fisher ... See more keywords