Dual effects of disorder on the strongly-coupled system composed of a single quantum dot and a photonic crystal L3 cavity
Abstract
Light-matter interaction in the strong coupling regime enables light control at the single-photon level. We develop numerical method and analytical expressions to calculate the decay kinetics of an initially excited two-level quantum emitter in dielectric nanostructure and single-mode cavity, respectively. We use these methods to discover the dual effects of disorder on the stronglycoupled system composed of a single quantum dot and a photonic crystal L3 cavity. The quality factor is sensitive to disorder, while the g factor and vacuum Rabi splitting are robust against disorder. A small amount of disorder may either decrease or increase the light localization and the light-matter interaction. Our methods offer flexible and efficient theoretical tools for the investigation of light-matter interaction, especially cavity quantum electrodynamics. Our findings significantly lower the requirements for optimization effort and fabrication precision and open up many promising practical possibilities.
- Publication:
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Science China Physics, Mechanics, and Astronomy
- Pub Date:
- June 2019
- DOI:
- 10.1007/s11433-018-9290-5
- Bibcode:
- 2019SCPMA..6264211C
- Keywords:
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- cavity quantum electrodynamics;
- light-matter interaction;
- photonic crystal