Affiliation: | a Department of Electrical Engineering and Computer Science, Box 1679B, Vanderbilt University, Nashville, TN 37235, USA b Institute of Theoretical Physics and Astronomy, A. Goštauto 12, Vilnius 2600, Lithuania c Chimie quantique et Photophysique, CP160/09, Université Libre de Bruxelles, B 1050 Brussels, Belgium |