1. Department of Electrical Engineering, School of Computation, Information and Technology, Technical University of Munich, 85748 Garching, Germany
2. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
3. Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
4. Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany
5. TUM Center for Quantum Engineering (ZQE), 85748 Garching, Germany