Drawing inspiration from classical semiconductor technology, a strategy to address many quantum dots through a small number of control lines is presented. The two-dimensional array consisting of 16 germanium quantum dots can be tuned in the few-hole regime with odd charge fillings and individually addressable tunnel couplings.
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This is a summary of: Borsoi, F. et al. Shared control of a 16 semiconductor quantum dot crossbar array. Nat. Nanotechnol. https://doi.org/10.1038/s41565-023-01491-3 (2023).
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A tunable two-dimensional crossbar array comprising 16 quantum dots. Nat. Nanotechnol. (2023). https://doi.org/10.1038/s41565-023-01511-2