Maybe someone in the field can speak up -- I'm not sure what is new about this study. It seems to be about an analysis of the double-slit experiment using individual atoms, and the press release implies that this is novel, but that experiment was first done over 30 years ago [0]. Is there anything to this study that is actually new?

0: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.70...