1. Department of Solid State Sciences, COCOON Group, Ghent University, 9000 Gent, Belgium
2. Department of Chemistry, Carleton University, K1S 5B6 Ottawa, Canada
3. Center for Nano- and Biophotonics, Ghent University, 9052 Gent, Belgium
4. Photonics Research Group, INTEC Department, Ghent University—IMEC, 9052 Gent, Belgium
5. ALBA Synchrotron Light Source, NCD-SWEET Beamline, 08290 Cerdanyola del Valles, Spain
6. Laboratoire d’Information Quantique, Université Libre de Bruxelles, 1050 Bruxelles, Belgium