Demonstration of strong coupling via electro-optical tuning in high-quality QD-micropillar systems.
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.
Kistner
C
C
Technische Physik, Physikalisches Institut, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
Heindel
T
T
Schneider
C
C
Rahimi-Iman
A
A
Reitzenstein
S
S
Höfling
S
S
Forchel
A
A
D003198:Computer Simulation; D017076:Computer-Aided Design; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D009991:Oscillometry / Q000295:instrumentation*; D045663:Quantum Dots