Conclusions
    
  - Two-dimensional simulations of the Schrödinger
  equation:
    
      - are feasible on present PCs
 
      - provide interesting examples
 
      - are helpful for teaching quantum mechanics
 
    
   
   - Todo: 
    
      - lots of standard class room examples
 
      - include electric/magnetic fields
 
      - add electron spin
 
      - enhance the performance