Coherent ultrafast dynamics in the quantum Hall effect regime

Academic Article


  • We review recent investigations of the femtosecond non-linear optical response of the two-dimensional electron gas (2DEG) in the quantum Hall effect regime. We find that the time and frequency profile of the four-wave-mixing non-linear optical spectrum is strongly influenced by Coulomb correlations between the photoexcited electron-hole pairs and the 2DEG collective excitations. We discuss experimental and theoretical results showing non-Markovian memory effects in the polarization dephasing, and an optically induced time-dependent coupling between the two lowest Landau level magnetoexcitons. © 2003 Elsevier Science Ltd. All rights reserved.
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    Author List

  • Perakis IE; Chemla DS
  • Start Page

  • 147
  • End Page

  • 154
  • Volume

  • 127
  • Issue

  • 2