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Coherent ultrafast dynamics in the quantum Hall effect regime

โœ Scribed by I.E. Perakis; D.S. Chemla

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
682 KB
Volume
127
Category
Article
ISSN
0038-1098

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โœฆ Synopsis

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.

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