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Multimode Sensor of Fluids Based on Porous Film

100%
Raicevic N., Maluckov A., Petrovic J.
Optofluidics, Microfluidics and Nanofluidics
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2014
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vol. 1
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issue 1
EN
Multimode interferometers are coming of age both as sensors and components of quantum circuits.Here we investigate an interferometer based on a porous thinfilm sensor of refractive index of fluids. Eigenmode analysis is used to identify effective single- and multi-mode sensing regimes and the corresponding realizations of interferometer. A general measure in a form of Fisher information is introduced to describe the impact of the film porosity on sensitivity and nonlinearity of the interferometer. As high sensitivity relies on formation of a highly peaked mode in the film, a parallel with plasmonic sensors is drawn. Close correlations between the sensor nonlinearity, mode profile and the shape of Fisher information function indicate the potential of this measure in describing complex non-Gaussian multimode structures
2
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Fluctuation of gauge field for general nonlinear Fokker-Planck equation and covariant version of Fisher information matrix

100%
Yamano T.
|
EN
We clarify a strong link between general nonlinear Fokker-Planck equations with gauge fields associated with nonequilibrium dynamics and the Fisher information of the system. The notion of Abelian gauge theory for the non-equilibrium Fokker-Planck equation has proposed in the literature, in which the associated curvature represents internal geometry. We present the fluctuation of the gauge field can be decomposed into three parts. We further show that if we define the Fisher information matrix by using a covariant derivative then it gives correlation of the flux components but it is not gauge invariant.
3
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Interplay of information quantifiers and the modified Jaynes-Cummings model

88%
Abdel-Khalek S., Plastino A., Obada A.-S.
Open Physics
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2011
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vol. 9
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issue 6
1426-1433
EN
The dynamics of the Buck and Sukumar model (B. Buck and C. V. Sukumar, Phys. Lett. A 81, 132 (1981)) is investigated using different semi-classical information-theory tools. Their interplay reveals somewhat unexpected features. A new signature for the classical-quantum barrier is encountered thereby.
4
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Information dynamics: temporal behavior of uncertainty measures

63%
Garbaczewski P.
Open Physics
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2008
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vol. 6
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issue 1
158-170
EN
We carry out a systematic study of uncertainty measures that are generic to dynamical processes of varied origins, provided they induce suitable continuous probability distributions. The major technical tools are the information theory methods and inequalities satisfied by Fisher and Shannon information measures. We focus on the compatibility of these inequalities with the prescribed (deterministic, random or quantum) temporal behavior of pertinent probability densities.
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