ABSTRACT
Quantum dots (QDs) have received great interest for applications such as lasers for optical fiber communications, semiconductor optical amplifiers, and spin filters. QDs can be utilized as a key building block in solid-state quantum computing through the formation of a quantum gate. QDs in such devices are characterized by the discreteness of electron energies that originates from a three-dimensional quantum mechanical confinement. This chapter focuses on the effects of the coupling among the QDs. It focuses on SAQDs configurations that enhance the positive piezoelectric potential; i.e., laterally coupled structure, and anti-correlated stacking structure. The chapter describes the numerical methods and the nanostructures, presents the effects of the coupling to electronic structures, and discusses the optical properties.
