It is explained that there is a photon traveling from one atom (node) to another which encodes information (as quantum state of the atom). Ok. But then there

It is explained that there is a photon traveling from one atom (node) to another which encodes information (as quantum state of the atom). Ok. But then there is a glossing over of what I think is the more impressive part: "The group also was able to entangle the atoms, which allowed them to share information with each other no matter how far the distance between them. " So they go from wired-up 60m distance photon information transmission to infinite distance quantum entanglement information transmission. In one sentence. Without any details! Over what distance did they test this entanglement? Was it as reliable as the wired-up version? Were they able to repeat it under different conditions? Is there a reason they were limited to only two nodes?