Rearranging The Deckchairs

Frank O'Dwyer's blog

Dude, You're Getting an Entangled Photon!

One of these days they are going to forget to carry the 1 and create a black hole or something.

Using a laser, the researchers created entangled pairs of photons on La Palma and fired one member of each pair to a European Space Agency (ESA) telescope on Tenerife, which had to make rapid, small adjustments to receive the photons, Zeilinger says. In another presentation, physicist Richard Hughes of Los Alamos National Laboratory described recent experiments in which his group fired a series of nonentangled photons 185 kilometers down a conventional optical fiber. In both cases, researchers demonstrated that they could transmit randomly oriented, or polarized, photons, which are suitable for sending messages that cannot be intercepted without garbling the information. Called quantum keys, such transmissions could allow users to scramble messages in a way that is potentially unbreakable.

Quantum Spookiness Spans the Canary Islands: Scientific American

technorati tags:quantum, cryptography, ESA, europe