With potential implications for cryptography and communication, Swiss researchers have achieved teleportation of quantum bits over long distances.

“Several table-top experiments have used qubits (two-dimensional quantum systems) or continuous variables to demonstrate the principle over short distances,” the researchers write in today’s issue of the journal Nature. “Here we report a long-distance experimental demonstration of probabilistic quantum teleportation.”

The uncertainty principle of quantum mechanics, which prohibits the possibility of knowing everything about an object, initially made scientists skeptical about teleportation.
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