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.
That a quantum computer outperforms all classical computers
“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.