With Prof. Peter Hommelhoff from the University of Erlangen, the attoworld team had a world-renowned expert in ultra-short-time physics as a guest. In his exciting lecture he explained how his team could recently retrieve trajectories of strong-field-driven electron emission from nanometer-sharp tips with the help of two-colour laser fields. He also presented the first logic gate operated with optical fields and an exciting avenue to accelerating electrons in nanoscale structures. Then a laboratory tour was on the agenda at Coulombwall and at the Max Planck Institute. We were very happy to have you as our guest, Peter!