Insider Brief Researchers demonstrated charge sensing, high-frequency reflectometry and a few-electron double quantum dot in zinc oxide, establishing tools for developing semiconductor spin qubits.
The team next plans to demonstrate electron spin readout and manipulation and measure how long spin states persist and retain quantum coherence.
Image: (a) The structure of the gate electrodes on the ZnO device used in the experiment in this paper.
Semiconductor quantum dots are promising building blocks for scalable quantum computers because they can confine individual electrons and use their spins to store quantum information.
The research team’s next steps include demonstrating electron spin readout and manipulation in ZnO quantum dots, as well as measuring key properties such as spin relaxation and coherence times.