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Quantum teleportation race heads for space

Image of Star Trek cast
From the original series: Leonard Nimoy as Commander Spock, William Shatner as Captain Kirk, DeForest Kelley as Doctor McCoy and James Doohan as Commander Scott.AP

A team of European scientists have teleported photons a distance of 143 kilometers between two Atlantic Ocean islands, setting a new distance record for a technology inevitably entangled with Star Trek lore

Unlike the science fiction media franchise where people are beamed from one place to another, quantum teleportation is all about sending information encoded in photons without passing through a physical medium, a technique that makes for super secure communications.

Scientists have been teleporting photons since 1997, mostly across optics labs. Teleporting over larger distances, however, has proven difficult since the principle that makes this all work, known as quantum entanglement, breaks down in optical fibers.

This changed in 2010 when a team of Chinese scientists teleported information 10 miles through the air. Earlier this month, Technology Review reported the Chinese team successfully shattered their own record by teleporting photons 60 miles across a lake with the aid of a laser.

The European team upped the ante, teleporting photons between Canary Islands of La Palma and Tenerife, a distance of 88 miles. Technology Review puts the race in perspective: 

The results sets up an interesting race between east and west. These experiments are proof-of-principle runs for a much more ambitious idea--quantum teleportation to orbiting satellites.Since teleportation is the basis of more-or-less perfectly secure communication, the prize here is a global communications network that cannot be hacked, even in principle.

For details on the techniques employed by the teams, check out Technology Review’s reporting on the Chinese and European teams, based on papers submitted posted on, a preprint server. 

--Via Technology Review

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