Scientists in China have demonstrated the world's longest teleportation of entangled photons at the Hefei National Laboratory, the University of Science and Technology and Tsinghua University in Bejing. The previous record of a few hundred meters was surpassed by the almost 10 miles distance between Badaling, China and Beijing.
Quantum entanglement—what Einstein called spooky action at a distance—enables photons, electrons and even atoms to achieve a synchronized state that stays that way even when they are separated. Theoretically, such entangled particles could enable instantaneous communications between two points regardless of their distance. Past attempts have been confined to fiber-optic cables inside laboratories, but these Chinese researchers have succeeded in performing the experiment using free-space communications.
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