Abstract
The resonance frequency of an InAs quantum dot strongly coupled to a GaAs photonic-crystal cavity was electrically controlled via the quadratic quantum confined Stark effect. Stark shifts up to 0.3 meV were achieved using a lateral Schottky electrode that created a local depletion region at the location of the quantum dot. We report switching of a probe laser coherently coupled to the cavity up to speeds as high as 150 MHz, limited by the constant of the transmission line. The coupling strength and the magnitude of the Stark shift with electric field were investigated while coherently probing the system.
- Received 4 June 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.047402
©2010 American Physical Society