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Quantum dots (QDs) are an efficient interface between matter and light and could potentially form the basis of quantum communications. However, their signal can be obstructed by structures that form by default during their manufacture. Researchers at the University of Basel, Ruhr-Universität Bochum, and Forschungszentrum Jülich have found a way to eliminate these interfering structures.
The Bochum team at the Chair for Applied Solid State Physics realizes quantum dots in semiconductors. Courtesy of RUB, Kramer.
The QDs manufactured in Bochum are generated in the semiconductor material indium arsenide (InAs). The researchers grow the material on a gallium arsenide (GaAs) substrate. During this process, an InAs layer forms…