Author Affiliations

Carlos Anton-Solanas,^1,2,* Maximilian Waldherr,^1,* Martin Klaas,¹ Holger Suchomel,¹ Tristan H. Harder,¹ Hui Cai,³ Evgeny Sedov,^4,5,6 Sebastian Klembt,¹ Alexey V. Kavokin,^4,5,7 Sefaattin Tongay,⁸ Kenji Watanabe,⁹ Takashi Taniguchi,¹⁰ Sven Höfling,^1,11 and Christian Schneider^1,2

¹Technische Physik and Würzburg-Dresden Cluster of Excellence ct.qmat, Universität Würzburg, D-97074 Würzburg, Germany

²Institute of Physics, Carl von Ossietzky University, 26129 Oldenburg, Germany

³University of California, Merced, California, USA

⁴School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, People’s Republic of China

⁵Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou 310024, People’s Republic of China

⁶Vladimir State University named after A. G. and N. G. Stoletovs, Gorky str. 87, 600000, Vladimir, Russia

⁷Spin Optics Laboratory, St. Petersburg State University, Ulyanovskaya 1, 198504 St. Petersburg, Russia

⁸School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, USA

⁹Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan

¹⁰International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan

¹¹SUPA, School of Physics and Astronomy, University of St. Andrews, St. Andrews UK

^*These authors contributed equally to this work