Researchers have achieved quantum teleportation over the farthest distance yet outside of the lab, sending the quantum state of a photon across more than 3.7 miles in an actual metropolitan network.

The experiments were conducted using ‘dark’ cables under the city of Calgary in Canada, and mark a major step toward the ultimate goal of a quantum Internet as researchers finally begin tests in real-world contexts.

Harnessing quantum teleportation could one day make for ultra-secure encrypted messaging, allowing senders to transmit ‘disembodied’ information to the desired recipient that would be impossible for an eavesdropper to intercept.

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