1. Institut für Anorganische Chemie Karlsruhe Institute of Technology (KIT) Engesserstraße 15 D-76131 Karlsruhe Germany
2. Institute of Nanotechnology Karlsruhe Institute of Technology (KIT) 76021 Karlsruhe Germany
3. Institute for Quantum Materials and Technologies (IQMT) Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
4. Centre Européen de Sciences Quantiques (CESQ) Institut de Science et d'Ingénierie Supramoléculaire (ISIS) Université de Strasbourg Strasbourg France