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Using intense, phase-locked multi-THz waveforms, we drive high-harmonic generation and quasiparticle collisions in solids, on sub-optical-cycle scales. By exploiting the crystal symmetry, we shape the high-harmonic field and control the polarization of the emission. Many-body effects and intraband acceleration are investigated by high-order sideband generation.
Summary form only given. We demonstrate that quantum correlations between the cavity field and the carrier density in an InGaAs quantum-well (QW) microcavity can be observed in a novel pump-probe experiment. In our investigations, the lower normal mode of a microcavity is excited with a pair of identical phase-locked pump pulses near normal incidence. The transient reflectivity of a weak probe pulse...
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