1. Chalmers University of Technology, 412 96 Gothenburg, Sweden
2. Department of Physics, Stockholm University, 114 19 Stockholm, Sweden
3. Department of Physics, University of Gothenburg, 405 30 Gothenburg, Sweden
4. International School of Photonics, Cochin University of Science and Technology, Kochi, Kerala 682022, India
5. Laboratoire de Chimie Physique (UMR8000), Université Paris-Sud, CNRS, Université Paris Saclay, Orsay 91405, France