One-dimensional polaritons with size-tunable and enhanced coupling strengths in semiconductor nanowires.

ABSTRACT: Strong coupling of light with excitons in direct bandgap semiconductors leads to the formation of composite photonic-electronic quasi-particles (polaritons), in which energy oscillates coherently between the photonic and excitonic states with the vacuum Rabi frequency. The light-matter coherence is maintained until the oscillator dephases or the photon escapes. Exciton-polariton formation has enabled the observation of Bose-Einstein condensation in the solid-state, low-threshold polariton lasing and is also useful for terahertz and slow-light applications. However, maintaining coherence for higher carrier concentration and temperature applications still requires increased coupling strengths. Here, we report on size-tunable, exceptionally high exciton-polariton coupling strengths characteri

SUBMITTER: van Vugt LK 

PROVIDER: S-EPMC3121826 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature