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Quantum computers can’t selectively forget information. A new algorithm for multiplication shows a way around that problem.
These games combine quantum entanglement, infinity and impossible-to-calculate winning probabilities. But if researchers can crack them, they’ll reveal deep mathematical secrets.
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.
As physicists extend the 19th-century laws of thermodynamics to the quantum realm, they’re rewriting the relationships among energy, entropy and information.
A quantum computing pioneer explains why the near future of quantum computation may lie in simulators, not general-purpose quantum machines.
A scientist at Bell Labs has started construction of a topological qubit, which could be the building block of a robust, scalable quantum computer.
A new theory explains the seemingly irreversible arrow of time while yielding insights into entropy, quantum computers, black holes, and the past-future divide.