Wigner transport through tunneling structures scattering interpretation of the potential operator

A stochastic method for simulation of quantum transport in nanoscale electronic devices is proposed. The interaction with the Wigner potential is interpreted as a scattering mechanism, which is a counterpart to the scattering mechanisms due to the lattice imperfections. The derived quantum Monte Carlo algorithm retains the basic features of the Single Particle Monte Carlo method used for simulation of classical devices. The method is applied for simulation of tunneling process through energy barriers.