Dresden 2011 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 85: Poster Session II

HL 85.6: Poster

Thursday, March 17, 2011, 18:00–21:00, P4

Coupling of Quantum Dots to Strongly Interacting Photonic Resonator Systems — •Stefan Declair, Torsten Meier, and Jens Förstner — University of Paderborn, Department of Physics and CeOPP, Warburger Str. 100, D-33098 Paderborn, Germany

We numerically investigate the coupling between semiconductor heterostructures like quantum dots and strongly interacting photonic resonators like coupled photonic crystal cavities or microdisks using a Finite-Difference Time-Domain method. The light-matter Hamiltonian is used to calculate the macroscopic polarisation via dynamic equations for the interband coherence of the semiconductor heterostructure [1].

For photonic systems of multiple coupled one-dimensional cavities and quantum dots, clear anticrossing behavior is observed when the quantum dot gap frequency is tuned through the resonances of the coupled cavity system. Also, strong coupling is shown for a system of two coupled two-dimensional high-Q nanocavities [2] with an embedded quantum dot.

[1] C. Dineen et al., Electromagnetic field structure and normal mode splitting in photonic crystal nanocavities, Optics Express 13, 4980 (2005).

[2] Y. Akahane et al., High-Q photonic nanocavity in a twodimensional photonic crystal, Nature 425, 944 (2003).