Microwave-Driven Atoms: From Anderson Localization to Einstein's   Photoeffect
  We study the counterpart of Anderson localization in driven one-electron Rydberg atoms. By changing the initial Rydberg state at fixed microwave frequency and interaction time, we numerically monitor the crossover from Anderson localization to the photo effect in the atomic ionization signal. 
Alexej Schelle, Dominique Delande, Andreas Buchleitner