Transient optical excitation and control in self-assembled quantum dots

Summary form only given. The optical response of self-assembled quantum dots (SAQDs) has been an area of extensive research in recent years, driven both by an interest in the basic physics of these strongly confined systems, and by the possibility of practical applications for such structures. There have been several studies of carrier relaxation in these systems, including differential transmission, and single-dot photoluminescence (PL) and PL excitation, as well as measurements of ultrafast dephasing times at room temperature. In this paper we demonstrate coherent control of confined excitations in an ensemble of SAQDs. The results allow us to infer a low temperature dephasing time for this system.