1. Department of Electrical Engineering and Information Technology; Institute of Smart Sensors, University of Stuttgart; Pfaffenwaldring 47 70569 Stuttgart Germany
2. Center for Integrated Quantum Science and Technology (IQST); Baden-Württemberg Germany
3. Laboratory of BioNanoTechnology; Wageningen University & Research; P.O. Box 8038 6700 EK Wageningen The Netherlands
4. MAGNEtic resonance research FacilitY - MAGNEFY; Wageningen The Netherlands
5. Instituto Regional de Investigació Científica Aplicada; Universidad de Castilla-La Mancha (UCLM); Avenida Camilo Jose Cela s/n 13071 Ciudad Real Spain