1. Laboratoire de Photonique Quantique et Moléculaire; École Normale Supérieure de Cachan; 61 Avenue du Président Wilson 94235 Cachan France
2. Advanced Materials Engineering and Modelling Group, Faculty of Chemistry; Wroclaw University of Technology; Wybrzeze Wyspianskiego 27 50-370 Wroclaw Poland
3. Laboratory of Physics of Nanostructures; Swiss Federal Institute of Technology Lausanne (EPFL); 1015 Lausanne Switzerland