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Shades of 'Star Trek'? Quantum Teleportation Sets Distance Record
Key Excerpts from Article on Website of Live Science
Posted: October 4th, 2015
http://www.livescience.com/52259-quantum-teleportation-sets-...
A record-breaking distance has been achieved in the bizarre world of quantum teleportation. Scientists teleported photons (packets of light) across a spool of fiber optics 63 miles (102 kilometers) long, four times farther than the previous record. Quantum teleportation relies on the strange nature of quantum physics, which finds that the fundamental building blocks of the universe can essentially exist in two or more places at once. Specifically, quantum teleportation relies on an odd phenomenon known as "quantum entanglement," in which subatomic particles can become linked and influence each other instantaneously, regardless of how far apart they are. Scientists cannot distinguish the state of either particle until one is directly measured, but because the particles are connected, measuring one instantly determines the state of the other. Currently, physicists can't instantly transport matter (say, a human), but they can use quantum teleportation to beam information from one place to another. "What's exciting is that we were able to carry out quantum teleportation over such a long distance," study co-author Martin Stevens, a quantum optics researcher at the NIST in Boulder, Colorado. Quantum teleportation could enable the development of a "quantum Internet" that allows messages to be sent more securely, Stevens said. The scientists detailed their findings ... in the journal Optica.
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