[HTML][HTML] Recent advances in Wigner function approaches

J Weinbub, DK Ferry - Applied Physics Reviews, 2018 - pubs.aip.org
The Wigner function was formulated in 1932 by Eugene Paul Wigner, at a time when
quantum mechanics was in its infancy. In doing so, he brought phase space representations …

Efficient solution of the Wigner–Liouville equation using a spectral decomposition of the force field

ML Van de Put, B Sorée, W Magnus - Journal of Computational Physics, 2017 - Elsevier
Abstract The Wigner–Liouville equation is reformulated using a spectral decomposition of
the classical force field instead of the potential energy. The latter is shown to simplify the …

Formulation of a phase space exponential operator for the Wigner transport equation accounting for the spatial variation of the effective mass

L Schulz, D Schulz - Journal of Computational Electronics, 2020 - Springer
A novel numerical approximation technique for the Wigner transport equation including the
spatial variation of the effective mass based on the formulation of an exponential operator …

Numerical methods for the Wigner equation with unbounded potential

Z Chen, Y **ong, S Shao - Journal of Scientific Computing, 2019 - Springer
Unbounded potentials are always utilized to strictly confine quantum dynamics and generate
bound or stationary states due to the existence of quantum tunneling. However, the existed …

A high order efficient numerical method for 4-D Wigner equation of quantum double-slit interferences

Z Chen, S Shao, W Cai - Journal of Computational Physics, 2019 - Elsevier
We propose a high order numerical method for computing time dependent 4-D Wigner
equation with unbounded potentials and study a canonical quantum double-slit interference …

Wigner ensemble Monte Carlo simulation without splitting error of a GaAs resonant tunneling diode

O Muscato - Journal of Computational Electronics, 2021 - Springer
A Monte Carlo technique for the solution of the Wigner transport equation has been
developed, based on the generation and annihilation of signed particles (Nedjalkov et al. in …

Numerical Study of Transient Wigner–Poisson Model for RTDs: Numerical Method and Its Applications

H Jiang, T Lu, W Yao, W Zhang - SIAM Journal on Scientific Computing, 2023 - SIAM
The system of transient Wigner–Poisson equations (TWPEs) is a common model to describe
carrier transport in quantum devices. In this paper, we design a second-order semi-implicit …

A Characteristic-Spectral-Mixed Scheme for Six-Dimensional Wigner–Coulomb Dynamics

Y **ong, Y Zhang, S Shao - SIAM Journal on Scientific Computing, 2023 - SIAM
Numerical resolution for 6-D Wigner dynamics under the Coulomb potential is faced with the
combined challenges of high dimensionality, nonlocality, oscillation, and singularity. In …

Optimization modeling and simulating of the stationary Wigner inflow boundary value problem

Z Sun, W Yao, T Lu - Journal of Scientific Computing, 2020 - Springer
The stationary Wigner inflow boundary value problem (SWIBVP) is modeled as an
optimization problem by using the idea of shooting method in this paper. To remove the …

A higher-order accurate operator splitting spectral method for the Wigner–Poisson system

Z Chen, H Jiang, S Shao - Journal of Computational Electronics, 2022 - Springer
An accurate description of 2-D quantum transport in a double-gate metal oxide
semiconductor field effect transistor (dgMOSFET) requires a high-resolution solver for a …