Affiliation: | a Laboratoire de Photonique et de Nanostructures, LPN-CNRS, Route de Nozay, 91460, Marcoussis, France b CEM2 – Université Montpellier 2, Case 67, 34095, Montpellier Cedex 05, France c Institute of Microelectronics and Information Technology, Royal Institute of Technology, Isafjordsgatan 22, 164 40, Kista, Sweden |