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The Wigner equation is a widely used approach to quantum device simulation. The formalism combines description on a rigorous quantum-kinetic level with the classical concepts for phase space and open boundary conditions.
This chapter discusses Frensley's approach [Fre90] to the discretization of the Wigner equation using finite differences. We show that the use of an equidistant product grid is necessary for a discretization which conserves mass.
Previous: 7.2.6.2 Relaxation-Time-Like Models
Up: III. Quantum Simulation of
Next: 8.1 Wigner Equation