Matter-wave interferometry puts new limits on ‘chameleon particles’
09 Jul 2024
Holding pattern Small clusters of caesium atoms (pink blobs) were held in a vertical optical lattice. A laser then splits each atom into a quantum state in which half of the atom was closer to a tungsten weight (shiny cylinder) than the other half. (Courtesy: Cristian Panda/UC Berkeley)
A matter-wave interferometer has measured the effect of gravity on individual atoms at the highest p
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