Weak exciton-photon coupling of PbS nanocrystals in air-slot mode-gap Si photonic crystal nanocavities in the near-infrared

摘要

We demonstrate micro-photoluminescence measurements of PbS nanocrystals coupled to air-slot mode-gap photonic crystal nanocavities with Q∼15,000 and Veff ∼0.02 (λair)³. The ultrahigh Q/V ratios are critical for applications in cavity QED, nonlinear optics and sensing.