Schrödinger's 'kittens' made in the lab from photons
Erwin Schrödinger dreamed up the famous thought experiment about a cat that is both dead and alive to demonstrate the absurdity of applying quantum mechanics to ordinary objects. Now two teams have made the closest thing yet to a Schrödinger's cat in the lab – by connecting hundreds of millions of photons via the strange quantum property of entanglement.
"It's not the entanglement of something as big as a cat, but it's at least a kitten," says Seth Lloyd of the Massachusetts Institute of Technology, a quantum physicist who was not involved in the work.
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