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Mechanical systems all tangled up

The motion of two ion pairs is linked through “spooky action at a distance”

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1:04pm, June 3, 2009

Researchers have linked the vibrations of two separated atom pairs, catching sight of a strange quantum effect called entanglement in a system that approaches the scale of everyday life. This new link between two pairs of oscillating ions, reported in the June 4 Nature, “pushes the bounds on where entanglement can be seen,” says study coauthor John Jost of the National Institute of Standards and Technology’s campus in Boulder, Colo.

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