Probing single electrons across 300-mm spin qubit wafers. (https://pubmed.ncbi.nlm.nih.gov/38693414/)

These scientists wanted to build a very powerful computer called a quantum computer, which needs a lot of tiny parts called qubits. They were using a special kind of qubit made from electrons in silicon. But they were having trouble making these qubits work well because sometimes they didn't work properly or were different from each other.

So, the scientists came up with a way to test hundreds of these qubits all at once using a big machine that can test them at a very cold temperature. By doing this, they could quickly figure out how to make the qubits better and more consistent. They found that by using techniques similar to those used in making regular computer chips, they could improve the qubits and make them work more reliably.

In the end, the scientists showed that by using these techniques, they could make the qubits work better and more consistently, bringing them closer to building a very powerful quantum computer.

Neyens S., Zietz OK., Watson TF., Luthi F., Nethwewala A., George HC., Henry E., Islam M., Wagner AJ., Borjans F., Connors EJ., Corrigan J., Curry MJ., Keith D., Kotlyar R., Lampert LF., Madzik MT., Millard K., Mohiyaddin FA., Pellerano S., Pillarisetty R., Ramsey M., Savytskyy R., Schaal S., Zheng G., Ziegler J., Bishop NC., Bojarski S., Roberts J., Clarke JS. Probing single electrons across 300-mm spin qubit wafers. Nature. 2024 May;629(8010):80-85. doi: 10.1038/s41586-024-07275-6. Epub 2024 May 1.