[1] Univ Paris Sud, Univ Paris Saclay, CNRS, Ctr Nanosciences & Nanotechnol, F-91120 Palaiseau, France
[2] STMicroelectron SAS, 850 rue Jean Monnet, F-38920 Crolles, France
[3] Natl Res Council Canada, 1200 Montreal Rd,Bldg M50, Ottawa, ON K1A 0R6, Canada
[4] Univ Ottawa, Ctr Res Photon, Ottawa, ON K1N 6N5, Canada
[5] Inst Optic Daza Valdes, Consejo Super Invest Cient CSIC, Madrid 28006, Spain