Abstract
Progress in single planar quantum wells has positioned germanium as a promising material for quantum information processing. The cover is an artistic impression of a germanium double quantum well (red) embedded in silicon-germanium (magenta). The low-disorder in the hole bilayer (dark red bubbles) leads to the observation of energy anticrossing in the quantum Hall effect (background). The results described by Giordano Scappucci and colleagues in article number 2100167 open up new exciting possibilities for the germanium quantum information route, from quantum devices and circuits with increased connectivity to the study of excitons in the quantum Hall regime.
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