Dear students, dear colleagues, Please join us for TOMORROW's colloquium by GIL REFAEL California Institute of Technology, Pasadena, USA who will talk about TOPOLOGICAL PHYSICS AT THE LIGHT-MATTER INTERFACE Please note that the colloquium starts at 16:15! After the colloquium we meet at 17:15 in front of the lecture hall for an apero. Please visit our web page http://www.colloquium.phys.ethz.ch for details. Best regards Christof Aegerter Sebastian Huber Ben Kilminster Alexandre Refregier