title: Coherent Control of the Exciton-Biexciton System in an InAs Self-Assembled Quantum Dot Ensemble.
abstract: Coherent control of a strongly inhomogeneously broadened system, namely, InAs self-assembled quantum dots, is demonstrated. To circumvent the deleterious effects of the inhomogeneous broadening, which usually masks the results of coherent manipulation, we use prepulse two-dimensional coherent spectroscopy to provide a size-selective readout of the ground, exciton, and biexciton states. The dependence on the timing of the prepulse is due to the dynamics of the coherently generated populations. To further validate the results, we performed prepulse polarization dependent measurements and confirmed the behavior expected from selection rules. All measured spectra can be excellently reproduced by solving the optical Bloch equations for a 4-level system.
authors: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA.|Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors: Takeshi
authors: T
authors: Suzuki
authors: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA.|Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors: Rohan
authors: R
authors: Singh
authors: Experimentelle Physik 2, Technische Universtät Dortmund, D-44221 Dortmund, Germany.
authors: Manfred
authors: M
authors: Bayer
authors: Lehrstuhl fuer Angewandte Festkoerperphysik, Ruhr-Universitaet Bochum, Universitaetsstrasse 150, D-44780 Bochum, Germany.
authors: Arne
authors: A
authors: Ludwig
authors: Lehrstuhl fuer Angewandte Festkoerperphysik, Ruhr-Universitaet Bochum, Universitaetsstrasse 150, D-44780 Bochum, Germany.
authors: Andreas D
authors: AD
authors: Wieck
authors: JILA, University of Colorado & National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA.|Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors: Steven T
authors: ST
authors: Cundiff