Enhanced light-matter interaction in atomically thin semiconductors and 2D single photon emitters coupled to dielectric nano-antennas

Abstract

Between two-dimensional (2D) semiconductors, the family of transition metal dichalcogenides (TMDs) exhibits promising optical properties, such as tightly bound excitons and single photon emitting centers, with favourable integration in current nano-photonic architectures. High refractive-index dielectrics have recently gained attention as they exhibit optical Mie resonances, offering a novel platform to engineer light-matter interaction down to sub-wavelength dimensions. In our work, we integrated single and double layer TMDs WSe 2 with Mie-resonant gallium phosphide (GaP) dimer nano-antennas and demonstrate the enhancement of the light-matter interaction of 2D excitons and relative single photon emitters.