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Communications of the ACM


Information Is Physics

Maxwell's demon, illustration

Efficient error-correcting codes for quantum computing recently emerged from mathematical models used to study black holes. This surprising finding joins to a long list of profound connections between information and physics.

The most intriguing examples began as paradoxes or "thought experiments" that are hard to test experimentally. Physicists take them seriously because they challenge core concepts and may require revolutionary theoretical changes that could have practical consequences.


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