1. Walter Schottky Institute and Physics Department, Technical University of Munich, Am Coulombwall 4a, 85748Garching, Germany
2. Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, 80799Munich, Germany
3. Qlibri GmbH, Maistr. 67, 80337Munich, Germany
4. Faculty of Physics, Ludwig-Maximilians-Universität München, Schellingstraße 4, 80799Munich, Germany
5. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
6. Research Center for Functional Materials, National Institute for Materials Science, Tsukuba305-0044, Japan
7. Physikalisches Institut, Karlsruhe Institute of Technology, Wolfgang-Gaede-Str. 1, 76131Karlsruhe, Germany