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Quantum computers can’t selectively forget information. A new algorithm for multiplication shows a way around that problem.
A two-player game can reveal whether the universe has an infinite amount of complexity.
In a Paris lab, researchers have shown for the first time that quantum methods of transmitting information are superior to classical ones.
A recent experiment shows how quantum mechanics can make heat flow from a cold body to a hot one, an apparent (though not real) violation of the second law of thermodynamics.