Berlin 2015 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 97: Quantum dots and wires: Pillars and cavities

HL 97.6: Talk

Friday, March 20, 2015, 10:45–11:00, ER 164

Influence of acoustic phonons on strong coupling phenomena in quantum-dot micro pillars — •Max Strauß¹, Anna Musial^1,2, Caspar Hopfmann¹, Micha Strauß⁴, Andreas Barth³, Martin Gläßl³, Christian Schneider⁴, Sven Höfling^4,5, Martin Kamp⁴, Vollrath Martin Axt³, and Stephan Reitzenstein¹ — ¹Technische Universität Berlin, Germany — ²Wroclaw University of Technology, Poland — ³Universität Bayreuth, Germany — ⁴Universität Würzburg, Germany — ⁵University of St Andrews, United Kingdom

Coupled quantum dot (QD)- microcavity systems are of great interest with respect to both, the fundamental study of cavity quantum electro dynamics (cQED) and possible applications (e.g. quantum information processing). In such systems, phonon-induced losses have recently become comparable to cavity losses and it is thus desirable to understand their influence on cQED phenomena. We investigate the influence of acoustic phonons on the exciton-photon interaction in the strong coupling regime. Examining more than 90 QD-micropillars, we comprehensively study the phonon-induced renormalization of the Rabi frequency in an extraordinary wide temperature range of up to 60 K.