Controlling the emission from single quantum dots with electro-opto- mechanical photonic crystal cavities
We present a device for the spectral reconfiguration of a two-dimensional photonic crystal cavity (PCC) based on parallel semiconductor membranes. The mechanical motion of the slabs introduces a variation in the effective refractive index of the coupled waveguides where the photonic crystal is etched resulting in a shift of the free-space wavelength. Using an integrated electrostatic actuator we demonstrated independent tuning up to 15 nm with less than 6 V bias. We present the electromechanical control of a PCC mode in resonance to single quantum dot (QD) emission lines for the real-time compensation of the spectral mismatch due to the dots' inhomogeneity. We discuss the operation of the device at low temperatures (< 10 K) and we measured the Purcell effect via the electro-mechanical control. A reversible tuning range of 13 nm and a spontaneous emission rate control by a factor of ten has been achieved. © 2013 IEEE.
International Conference on Transparent Optical Networks
Midolo, L., Pagliano, F., Hoang, T., Xia, T., Van Otten, F., Li, L., Linfield, E., & Lermer, M. (2013). Controlling the emission from single quantum dots with electro-opto- mechanical photonic crystal cavities. International Conference on Transparent Optical Networks https://doi.org/10.1109/ICTON.2013.6602936