All I want to know when confronted with a headline like this is: FTL info transmission or not? I can’t discern the answer from the article. So I’ll assume as always there’s some gotcha that means it’s a no.
In some experiments it's easier to make the calculations using fake waves that move at a velocity that may be faster than light, but they are just a mathematical recombination of waves that move at another velocity (that is less or equal than light velocity).
