When Photons Go AWOL

by Mark Anderson New Scientist, 15 Apr 2006 James Franson is no stranger to strange things. He has done plenty of experiments showing, for example, that quantum entanglement really is as spooky as it seems. Einstein hated the idea, but Franson has seen at first hand that two quantum particles, such as photons, can affect each other's properties no matter how far apart they might be. Even that degree of experience in negotiating quantum weirdness, however, did not prepare Franson for what he has just found. It turns out that it is not just quantum particles that get entangled: if Franson's calculations are correct, you can entangle bits of empty space as well. Einstein would really have been spooked by this one. Read more