This may look like some kind of rainbow top hat, but in fact you're looking at the changing state of a quantum bit — a qubit — over time. This experiment helps predict how quantum systems evolve, and may help us steer and control them more effectively in the future. [Nature via New Scientist]
Random numbers fuel and protect our digital lives, but they're notoriously difficult to generate properly. Now, scientists have shown that smartphone cameras can be used as quantum random number generators—and it could change the face of mobile security.
Today's quantum computers are no more than experiments. Researchers can string together a handful of quantum bits -- seemingly magical bits that store a "1″ and "0″ at the same time -- and these ephemeral creations can run relatively simple algorithms. But new research from IBM indicates that far more complex quantum computers aren't that far away.