1. Photochemical Dynamics Group, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
2. Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
3. Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
4. Adolphe Merkle Institute, University of Fribourg, 1700 Fribourg, Switzerland