Abstract
Summary form only given. The optical properties of different quantum dot structures consisting of individual dots and pairs of coupled dots have been studied experimentally. The 7/spl times/7/spl times/7 nm/sup 3/ size GaAs quantum dots form at the intersection of three orthogonal quantum wells fabricated by two-fold application of the cleaved edge over-growth method. The high degree of control over shape, composition and position of the dots, achievable by this technique, allows a detailed investigation of the influence of coupling between zero-dimensional objects. In this way an artificial molecule can be assembled from two of such artificial atoms.
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