New Quantum 'Cat State' Can Be in Two Places at Once

Chances are you’re familiar with the Schroedinger’s cat paradox, whereby a hypothetical cat inside a box is both dead and alive until we open the box to see for ourselves. Now physicists at Yale University have figured out how to make a quantum cat that both lives and dies in two boxes at once. They described their…

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Physicists Prove That Spooky Action At a Distance Is Real

Entanglement is one of the strangest aspects of quantum mechanics, whereby two subatomic particles can be so closely connected that one can seem to influence the other even across long distances. Albert Einstein dubbed it “spooky action at a distance,” and two new experiments have now definitively shown that the…

A New Way of Thinking About Spacetime That Turns Everything Inside Out

One of the weirdest aspects of quantum mechanics is entanglement, because two entangled particles affecting each other across vast distances seems to violate a fundamental principle of physics called locality: things that happen at a particular point in space can only influence the points closest to it. But what if…