  A quantum simulator based on ultracold optically trapped atoms for simulating
the physics of atoms and molecules in ultrashort intense laser fields is
introduced. The slowing down by about 13 orders of magnitude allows to watch in
slow motion the tunneling and recollision processes that form the heart of
attosecond science. The extreme flexibility of the simulator promises a deeper
understanding of strong-field physics, especially for many-body systems beyond
the reach of classical computers. The quantum simulator can experimentally
straightforwardly be realized and is shown to recover the ionization
characteristics of atoms in the different regimes of laser-matter interaction.
