1. Institute of Quantum Matter, Ulm University, 89081 Ulm, Germany
2. Research Unit, Parc Sanitari Sant Joan de Déu and Foundation Sant Joan de Déu, Esplugues de Llobregat, 08950, Barcelona
3. Institute of Optoelectronics, Ulm University, 89081 Ulm, Germany
4. Scientific Computing Centre Ulm, Ulm University, 89081 Ulm, Germany