Event-based simulation of single-photon beam splitters and Mach-Zehnder   interferometers
  We demonstrate that networks of locally connected processing units with a primitive learning capability exhibit behavior that is usually only attributed to quantum systems. We describe networks that simulate single-photon beam-splitter and Mach-Zehnder interferometer experiments on a causal, event-by-event basis and demonstrate that the simulation results are in excellent agreement with quantum theory. 
H. De Raedt, K. De Raedt, and K. Michielsen