ABSTRACT
Theoretical and computational efforts in coupled quantum dots (QDs) have so far focused on ideal symmetric structures. This chapter presents simulation results of symmetric and asymmetric laterally coupled vertical QDs. This chapter describes the structure of the coupled QD system. It briefly describes self-consistent simulation procedure based on the density functional theory approach. The chapter presents simulation results of symmetric and asymmetric QDs, and a partly symmetrized asymmetric system with different applied side gate biases. It performs three-dimensional self-consistent simulations of a double QD system taking into account the layered structure of the system and quantum many-body interactions. The principal effects of structural asymmetry are to produce an upward shift of the conduction band edge in the smaller dot and introduce a difference in the shape of the potential profile in the two dots.
