Open AccessDemonstration of strong coupling via electro-optical tuning in high-quality QD-micropillar systems
Author(s) -
C. Kistner,
Tobias Heindel,
Christian Schneider,
Arash RahimiIman,
S. Reitzenstein,
Sven Höfling,
A. Forchel
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.015006
Subject(s) - quantum dot , coupling (piping) , optoelectronics , stark effect , exciton , resonance (particle physics) , materials science , q factor , quantum confined stark effect , quality (philosophy) , cavity quantum electrodynamics , optics , physics , laser , quantum well , quantum , condensed matter physics , atomic physics , resonator , electric field , quantum mechanics , open quantum system , metallurgy
We demonstrate electro-optical tuning of single quantum dots (QDs) embedded in high-quality (high-Q) micropillar cavities by exploiting the quantum confined Stark effect (QCSE). Combining electrically contacted high-Q micropillars and large In(0.3) Ga(0.7)As QDs with high oscillator strength facilitates the realization of strong coupling. In our experiments a single QD exciton was electrically tuned on resonance with a cavity mode of a micropillar with 1.9 microm diameter and a quality-factor (Q-factor) of 14,000 enabling the observation of strong coupling with a vacuum Rabi-Splitting of 63 microeV.