From Scientific American:
The mysterious phenomenon known as quantum entanglement—where objects seemingly communicate at speeds faster than light to instantaneously influence one another, regardless of their distance apart—was famously dismissed by Einstein as “spooky action at a distance.” New experiments could soon answer skeptics by enabling people to see entangled pulses of light with the naked eye.
Although Einstein rebelled against the notion of quantum entanglement, scientists have repeatedly proved that measuring one of an entangled pair of objects, such as a photon, immediately affects its counterpart no matter how great their separation—theoretically. The current record distance is 144 kilometers, between the Canary Islands of La Palma and Tenerife.
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