Quantum-dot-induced phase shift in a pillar microcavity
Andrew B Young, Rupert F. Oulton, C. Y. Hu, Arthur C. T. Thijssen, Christian Schneider, Stephan Reitzenstein, Martin Kamp, Sven Höfling, L. Worschech, A. Forchel, John G. Rarity · Physical Review A · 2011
We perform high-resolution reflection spectroscopy of a quantum dot resonantly coupled to a pillar microcavity. We show the change in reflectivity as the quantum dot is tuned through the cavity resonance and measure the quantum-dot-induced phase shift using an ultrastable interferometer. The macroscopic phase shift we measure could be extended to the study of charged quantum dot pillar microcavity systems, where it could be exploited to realize a high-efficiency spin photon interface for hybrid quantum information schemes.