Articles with "wigner function" as a keyword



The Negativity‐to‐Violation Map between Wigner Function and Quantum Contextuality Inequality for a Single Qudit

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Published in 2019 at "Annalen der Physik"

DOI: 10.1002/andp.201800464

Abstract: The relation between discrete Wigner function and quantum contextuality based on graph theory has been studied, following the work in [Nature 510,351(2014)]. To do this, non‐stabilizer projectors have been introduced to a series of non‐contextuality… read more here.

Keywords: quantum contextuality; contextuality; wigner function; qudit ... See more keywords

Quantum Speed Limit and Nonclassicality in Open Quantum System Models Using the Wigner Function

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Published in 2024 at "Annalen der Physik"

DOI: 10.1002/andp.202400194

Abstract: The quantum speed limit and the Wigner function of open system models are studied. To this end, the phase covariant and a two‐qubit model interacting with a squeezed thermal bath via position‐dependent coupling are used.… read more here.

Keywords: quantum speed; speed limit; wigner function; system models ... See more keywords

Effects of rotation and acceleration in the axial current: density operator vs Wigner function

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Published in 2019 at "Journal of High Energy Physics"

DOI: 10.1007/jhep02(2019)146

Abstract: A bstractThe hydrodynamic coefficients in the axial current are calculated on the basis of the equilibrium quantum statistical density operator in the third order of perturbation theory in thermal vorticity tensor both for the case… read more here.

Keywords: wigner function; density operator; axial current; acceleration ... See more keywords
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Wigner function and phase sensitivity of photon-added coherent states and number states as inputs of MZI

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Published in 2020 at "Optik"

DOI: 10.1016/j.ijleo.2020.165013

Abstract: Abstract In this paper, we investigate the quantum interference of output port by considering any photon-number state and photon-added coherent states (PSCS) as inputs of Mach-Zehnder interferometer. We re-present the relationship between input and output… read more here.

Keywords: output; wigner function; phase sensitivity; photon ... See more keywords
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Molecules in confinement in liquid solvents: general discussion.

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Published in 2018 at "Faraday discussions"

DOI: 10.1039/c8fd90051e

Abstract: Petr Slavicek responded: Linear potential is probably the most convenient test case as one can perform all of the calculations analytically (see also the answer to the next question). The use of the delta function… read more here.

Keywords: solvents general; confinement liquid; molecules confinement; liquid solvents ... See more keywords

Analytic Wigner distribution function for tunneling and trajectory models

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Published in 2019 at "Journal of Applied Physics"

DOI: 10.1063/1.5086434

Abstract: The Wigner function is assembled from analytic wave functions for a one-dimensional closed system (well with infinite barriers). A sudden change in the boundary potentials allows for the investigation of time-dependent effects in an analytically… read more here.

Keywords: time; wigner; wigner function; closed system ... See more keywords
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Quantum phase diagrams of matter-field Hamiltonians II: Wigner function analysis

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Published in 2020 at "Physica Scripta"

DOI: 10.1088/1402-4896/abd654

Abstract: Non-classical states are of practical interest in quantum computing and quantum metrology. These states can be detected through their Wigner function negativity in some regions. We show that the surfaces of minimum fidelity or maximum… read more here.

Keywords: phase; quantum; field; wigner function ... See more keywords

Wigner function of the Ince–Gauss states of the two-dimensional quantum harmonic oscillator

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Published in 2025 at "Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences"

DOI: 10.1098/rspa.2024.0627

Abstract: We present two equivalent analytical expressions of the Wigner function (WF) of Ince–Gauss (IG) eigenstates of the Schrödinger equation in elliptic coordinates for the two-dimensional (2D) harmonic oscillator. To this end, we first derive closed-form… read more here.

Keywords: wigner function; harmonic oscillator; function ince; ince gauss ... See more keywords

Smoothed Wigner distribution, using past and future information, is not the Wigner function of the smoothed weak-valued state

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Published in 2025 at "Physical Review A"

DOI: 10.1103/j71g-pnmb

Abstract: In this paper, we correct a mistake we made in [Phys. Rev. Lett. $\textbf{122}$, 190402 (2019)] and [Phys. Rev. A $\textbf{103}$, 012213 (2021)] regarding the Wigner function of the so-called smoothed Weak-Valued state (SWV state).… read more here.

Keywords: wigner function; state; distribution; wigner distribution ... See more keywords

Lorentz-violating extension of Wigner function formalism and chiral kinetic theory

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Published in 2024 at "Physical Review D"

DOI: 10.1103/physrevd.110.035020

Abstract: The quantum kinetic equation for the gauge-invariant Wigner function, constructed from spinor fields that obey the Dirac equation modified by CPT and Lorentz symmetry-violating terms, is presented. The equations for the components of the Wigner… read more here.

Keywords: wigner function; chiral kinetic; lorentz violating; kinetic theory ... See more keywords
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Anomalous current from the covariant Wigner function

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Published in 2018 at "Physical Review D"

DOI: 10.1103/physrevd.97.076013

Abstract: We consider accelerated and rotating media of weakly interacting fermions in local thermodynamic equilibrium. Kinetic properties of this media are described by covariant Wigner function calculated on the basis of relativistic distribution function of particles… read more here.

Keywords: current covariant; anomalous current; wigner function; covariant wigner ... See more keywords