FYI: This is for a very different substrate (quantum dots, which are basically individual electrons trapped in special silicon defects) compared to the substrates that have seen more attention for quantum computing (superconducting circuits and trapped ions). They are behind in terms of raw qubit counts -- which are not that meaningful -- and in terms of their overall abilities, but they hope to catch up by building higher quality components that cross the fault-tolerant threshold first.

If, like me, you don't already know a lot about quantum computing experiments, this article shouldn't interest you. At best, this is a small step of many thousands that will be taken on the way building a working computer.