Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field

Hybrid plasmonic nano-emitters, combining quantum dot emitters (QD) and plasmonic nanoantennas, offer new light control perspectives. Precise nanoscale active medium positioning is challenging. This work demonstrates optimal overlap between antenna near-field and active medium, spatially controlled via plasmon-triggered two-photon polymerization of a photosensitive formulation containing QDs. The response is polarization-sensitive, showing different emission states linked to nanoscale overlap between excitation field and active medium. Reduced QD concentration enables single QD trapping near Au particles, exhibiting polarization-dependent single-photon switching.

Dandan Ge, Sylvie Marguet, Ali Issa, Safi Jradi, Tien Hoa Nguyen, Mackrine Nahra, Jéremie Béal, Régis Deturche, Hongshi Chen, Sylvain Blaize, Jérôme Plain, Céline Fiorini, Ludovic Douillard, Olivier Soppera, Xuan Quyen Dinh, Cuong Dang, Xuyong Yang, Tao Xu, Bin Wei, Xiao Wei Sun, Christophe Couteau, Renaud Bachelot