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HL: Fachverband Halbleiterphysik

HL 35: Focus Session: Transient multi-wave mixing on excitonic resonances

HL 35.4: Vortrag

Donnerstag, 30. März 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 Schneider^4,5, 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).