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, and L. N. Pfeiffer
Phys. Rev. Lett. 84, 1607 – Published 14 February 2000
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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<ne3×1010cm2. 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.

  • Received 13 July 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.1607

©2000 American Physical Society

Authors & Affiliations

R. Rapaport, R. Harel, E. Cohen, Arza Ron, and E. Linder

  • Solid State Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel

L. N. Pfeiffer

  • Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, New Jersey 07974

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Issue

Vol. 84, Iss. 7 — 14 February 2000

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