Abstract
The negatively charged exciton is observed to strongly couple with the microcavity- (MC-)confined photons in a GaAs quantum well containing a two-dimensional electron gas with . This strong coupling results in a formation of charged polaritons. The coupling strength is found to depend on , in analogy to two-level atoms in a cavity. The analysis of the reflection and photoluminescence spectra shows that is strongly admixed with the neutral exciton via their coupling with the MC photons. The linewidth dependence on indicates that electron-polariton scattering is effective.
- Received 13 July 1999
DOI:https://doi.org/10.1103/PhysRevLett.84.1607
©2000 American Physical Society