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Femtosecond dynamics of inter-Landau level excitations of a two-dimensional electron gas in the quantum Hall regime

Fromer, N. A. ; Schüller, Christian ; Chemla, D. S. ; Shahbazyan, T. V. ; Perakis, I. E. ; Driscoll, D. ; Gossard, A. C.



Abstract

We use degenerate four-wave mixing to investigate the dynamics of electron–hole pairs interacting with magnetoplasmon excitations of a two-dimensional electron gas (2DEG) in the quantum Hall effect regime. We observe a strong coupling between Landau levels induced by the magnetoplasmon interactions, leading to a transfer of our signal strength to the lowest Landau level, as well as strong ...

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