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Surprising reversal in quantum systems - EurekAlert

<p>Researchers have studied topological pumping in an artificial solid made of cold atoms. The atoms were trapped using laser beams. Surprisingly, the atoms suddenly turned around at a wall made of laser light, meaning that the direction of the topological pumping had changed. When the atoms interacted repulsively, these happened even before they reached the wall. Effects like these, which are robust against disturbances, could be used in quantum technologies in the future.</p>

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