Teleportation and hype

Various people are making a big fuss about these Australian scientists teleporting a laser beam. As has been true for the last several "Oh my God, science fiction has become real!" discoveries and experiments, this one turns out to be much less cool than it sounds, though there's plenty of misinformation (including in that article pointed to above) to help confuse the issue.

It turns out that (if I understand correctly, which I may not) this experiment simply shows that something previously known possible can be done with a large number of photons: they "scan" the original laser beam, extracting some information about its state (which process destroys the original beam), and then send that information a little ways away, where they create an exact duplicate of the original using a combination of the information extracted and a cool application of quantum entanglement. There's an IBM article that explains this much more coherently than I'd be able to, and no doubt more accurately as well. Cool stuff, but not likely to result in the ability to teleport humans anytime soon.

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