Directional silicon nano-antennas for quantum emitter control designed by evolutionary optimization

• DOI: 10.1364/josab.506085
• Publication Date: 2024-01-08T21:00:14Z
• Authors: Romain Hernandez; Peter R. Wiecha; Jean-Marie Poumirol; Gonzague Agez; Arnaud Arbouet; Laurence Ressier; Vincent Paillard; Aurélien Cuche
• Keywords: Robustness; Nanophotonics

We optimize silicon nano-antennas to enhance and direct the emission of local quantum sources. combine global evolutionary optimization (EO) with frequency domain electrodynamical simulations compare design strategies based on resonant non-resonant building blocks. Specifically, we investigate performance models different degrees freedom but comparable amounts available material. find that simpler geometric allow significantly faster convergence optimizer, which, expectedly, comes at cost a reduced optical performance. finally analyze physical mechanisms underlying directional also an rate enhancement surprising robustness against perturbations source emitter location. This makes structures highly interesting for actual nano-fabrication. believe optimized, all-dielectric have high potential genuine breakthroughs in multitude applications nanophotonics technologies.