I can't speak to as to the technical architecture. I know that all the articles keep saying quantum dots. So I assume, they are qdots of some fashion.

https://www.sciencedaily.com/releases/2018/09...100944.htm
https://www.sciencedaily.com/releases/2018/03...141726.htm
https://www.nextbigfuture.com/2018/11/10-qubi...-2022.html

There are plenty of mentions in the past year of qdot research for quantum computing.