Strong coupling between a single quantum dot and an L4/3 photonic crystal nanocavity

Abstract

We demonstrate strong coupling between a single quantum dot and a GaAs-based L4/3-type photonic crystal nanocavity. The L4/3 cavity supports a high theoretical Q factor (~8{\times}10^6), a small mode volume (~0.32 (λ/n)^3), and an electric field distribution with the maximum electric field lying within the host dielectric material, which facilitates strong coupling with a quantum dot. We fabricated L4/3 cavities and observed a high Q factor over 80,000 using photoluminescence measurement. We confirmed strong coupling between a single quantum dot and an L4/3 cavity with a Q factor of 33,000 by observing a clear anti-crossing in the spectra.

References in corpus (4)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Linear and nonlinear optical spectroscopy of a strongly-coupled microdisk-quantum dot system
• A quantum logic gate between a solid-state quantum bit and a photon
• Investigation of Non Resonant Dot - Cavity Coupling in Two Dimensional Photonic Crystal Nanocavities