1. Institute
of Theoretical Physics and Integrated Quantum Science and Technology
IQST, University of Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany
2. Joint
Quantum Institute, Department of Physics, University of Maryland and National Institute of Standards and Technology, College Park, Maryland 20742, United States
3. Department
of Bioenergetics, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany