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HL: Fachverband Halbleiterphysik
HL 35: Focus Session: Transient multi-wave mixing on excitonic resonances
HL 35.4: Talk
Thursday, March 30, 2023, 11:00–11:15, POT 251
Multi-wave mixing applied to explore and control the coherent dynamics of ensembles of semiconductor quantum dots — •Hendrik Rose1, Stefan Grisard2, Artur V. Trifonov2, Rilana Reichhardt2, Doris E. Reiter3, Matthias Reichelt1, Christian Schneider4,5, Martin Kamp4, Sven Höfling4, Manfred Bayer2, Ilya A. Akimov2, and Torsten Meier1 — 1Paderborn University, Department of Physics & Institute for Photonic Quantum Systems (PhoQS), 33098 Paderborn, Germany — 2Experimentelle Physik 2, Technische Universität Dortmund, 44221 Dortmund, Germany — 3Condensed Matter Theory, Technische Universität Dortmund, 44221 Dortmund, Germany — 4Technische Physik, Universität Würzburg, 97074 Würzburg, Germany — 5Institute of Physics, University of Oldenburg, 26129 Oldenburg, Germany
Multi-wave mixing provides various possibilities to investigate the ultrafast dynamics of semiconductors. Here, we focus on ensembles of quantum dots where the nonlinear dynamics leads to emission in the form of photon echoes. We show that photon echoes can be temporally controlled by the application of multi-wave mixing [1] and furthermore demonstrate that a damping mechanism based on the spatial shape of the applied laser pulses can be circumvented by pulse shaping [2].
[1] A. N. Kosarev, H. Rose, et al., Commun. Phys. 3, 228 (2020).
[2] S. Grisard, H. Rose, et al., Phys. Rev. B 106, 205408 (2022).