Researchers at Tohoku University, in collaboration with the National Institute for Materials Science (NIMS) and the University of Tokyo, have taken an important step toward semiconductor quantum computing using zinc oxide (ZnO).

The team successfully demonstrated charge sensing, high-frequency reflectometry and the formation of a few-electron double quantum dot in a ZnO device—three key technologies for developing and evaluating spin qubits.

The work is published in the journal Physical Review Applied.