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--- title: "quantum information theory" type: concept related: [Information Theory, Counterfactual, Constructor Theory, Quantum Theory, Universal Quantum Constructor] source: https://www.jemoka.com/posts/kbhquantum_information_theory/ confidence: high status: active --- The information theory computational model behind quantum theory. It proposes quantum computers, proposed during the 80s. Theoretically, quantum computers have quantum supremacy, which is exciting. It is a theory that works with counterfactual information. quantum computer A quantum computer is a computer that uses quantum effects to perform Turing-like computations quantum supremacy That a quantum computer outperforms all classical computers universal computer “a programmable system whose repertoire includes all physically possible computations” — Turing. You will realize that modern computers are not actually capable of all computations—apparently, they can’t make itself. Therefore, to actually achieve this, we have to make a more general type of computer: a constructor — a universal quantum constructor.