Unfortunately, they didn't mention noise properties in the abstract. Is it present in the paper?

Edit: it is. The device is actually pretty difficult to implement as it requires liquid hydrogen cooling. The noise is shown to be temperature dependent but a full error analysis is not present. Looking forward to further research and an attempt to convert this quantum device to higher temperatures.

I meant 'randomdrake posting relevant DOIs and abstracts all over HN threads discussing things that discuss scientific papers. But thanks for the clarification on the content of this paper :).