1. Laboratory for fundamental BioPhotonics (LBP), Institute of Bioengineering (IBI), and Institute of Materials Science (IMX), School of Engineering (STI), and Lausanne Centre for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
2. Theoretical Physics and Center for Biophysics, Saarland University, Saarbrücken 66123, Germany
3. Institute of Biophysics, Johannes Kepler University Linz, Gruberstraße 40, Linz 4020, Austria