Coherent control of intersubband optical bistability in quantum wells

Details Coherent control of intersubband optical bistability in quantum wells Coherent control of intersubband optical bistability in quantum wells

2003-12-20

arxiv.org/abs/cond-mat/0312549v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures

Scientific paper

10.1063/1.1751611

We present a study of the nonlinear intersubband (ISB) response of conduction electrons in a GaAs/AlGaAs quantum well to strong THz radiation, using a density-matrix approach combined with time-dependent density-functional theory. We demonstrate coherent control of ISB optical bistability, using THz control pulses to induce picosecond switching between the bistable states. The switching speed is determined by the ISB relaxation and decoherence times, T1 and T2.

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