Negatively charged quantum well polaritons in a GaAs/AlAs microcavity: An analog of atoms in a cavity

R. Rapaport, R. Harel, E. Cohen, Arza Ron, E. Linder, L. N. Pfeiffer

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

The negatively charged exciton (X-) is observed to strongly couple with the microcavity- (MC-)confined photons in a GaAs quantum well containing a two-dimensional electron gas with 0<ne≤3×1010 cm-2. This strong coupling results in a formation of charged polaritons. The coupling strength is found to depend on ne, in analogy to two-level atoms in a cavity. The analysis of the reflection and photoluminescence spectra shows that X- is strongly admixed with the neutral exciton via their coupling with the MC photons. The linewidth dependence on ne indicates that electron-polariton scattering is effective.

Original languageAmerican English
Pages (from-to)1607-1610
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number7
DOIs
StatePublished - 2000
Externally publishedYes

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