Sep. 7 at 3:03 AM
$INFQ In case people didn't realize this recent news 3 days ago, it is an extremely huge deal and solves a 100 year old mystery. This was solved with neutral atom (rubidium), not trapped ion.
"The team behind the new study, led by physicist Ron Folman at Ben-Gurion University of the Negev in Israel, chilled roughly 20,000 rubidium atoms into an exotic state of matter called a Bose-Einstein condensate". For the first time, physicists have measured the tiny quantum shift an object acquires by falling through Earth's gravity, an effect of Einstein's relativity that was predicted almost a century ago but never observed.
Researchers placed ultracold rubidium atoms into a superposition, a quantum state in which a single particle takes two paths at once. In this experiment, one path put the atom in free fall while the other kept it motionless. Recombining the atoms revealed an almost imperceptible difference between the two paths.
https://www.livescience.com/physics-mathematics/quantum-physics/there-is-no-conflict-between-quantum-physics-and-gravity-physicists-prove-einsteins-happiest-thought-holds-true-at-quantum-scales
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