It was simulated on the quantum computer. Source: it pretty much says so in the article description. The atom singular mentioned here would be the quantum memory.

A very clickbaity and misleading choice of headline, which is unbecoming of an actual university.

Very frustrating.

This allowed them to design and map this very complicated problem onto a relatively small quantum device ­– and then slow the process down by a factor of 100 billion.

What does this even mean???

Tried to access the journal article but it’s pay walled. The abstract doesn’t explain much.

Here’s a short video explaining it.