Various techniques of single-electron circuit simulation are presented
. The subjects include visualization of state probabilities, accurate
yet reasonably fast steady-state analysis and SPICE-based high-speed s
imulation for circuits composed of Single-Electron Transistors (SETs).
The visualized state probabilities allow one to grasp the dynamics of
a single-electron circuit intuitively. The new algorithm for steady-s
tate analysis uses the master equation and Monte Carlo method in combi
nation. We suppose this is the best way to perform steady-state analys
is. The SPICE-based simulator significantly outperforms the convention
al reference simulator in speed. It is, to the best of our knowledge,
the only simulator that can simulate SET circuits for real application
s. It also facilitates the study of the integration of SETs and MOSFET
s.