Collaboration Collaboration Maciej Koperski National University of Singapore, Singapore Guillaume Cassabois, Vincent Jacques, Bernard Gil Laboratoire Charles Coulomb, University of Montpellier, CNRS, Montpellier, France Adam Gali, Anton Pershin HUN-REN Wigner Research Centre for Physics, Budapest, Hungary Filip Tuomisto University of Helsinki, Helsinki, Finland Michał Leszczyński, Paweł Prystawko, Robert CzerneckiIzabella Grzegory Institute of High Pressure Physics Polish Academy of Sciences, Warsaw, Poland Sławomir KretAnna Reszka, Bogdan Kowalski Institute of Physics Polish Academy of Sciences, Warsaw, Poland James Edgar Kansas State University, Manhattan, Kansas, USA Hannah Stern University of Oxford, Oxford, United Kingdom Mariusz ZdrojekWłodzimierz Strupiński Warsaw University of Technology, Warsaw, Poland Paweł Kowalczyk University of Łódź Jacek BaranowskiTymoteusz Ciuk Łukasiewicz Research Network Institute of Microelectronics and Photonics, Warsaw, Poland Marek Potemski Laboratoire National des Champs Magnétiques Intenses, CNRS, Genoble, France