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Researchers at Tohoku University and NIMS have successfully demonstrated high-frequency reflectometry and charge sensing in zinc oxide quantum dots, addressing a critical bottleneck for scalable semiconductor quantum computing. This advancement enables rapid readout of electron spin states in ZnO devices, offering a viable alternative to silicon or gallium arsenide with favorable properties like low nuclear spin environments. The work establishes a foundational measurement technique essential for developing high-speed evaluation protocols in next-generation quantum processors.
Zinc Oxide Quantum Dots Advance Quantum Computing

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…
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