Quantum mechanics requires the transformations to be reversible but allows more general states of the computation (superpositions).
Golden Gate Bridge | Golden Gate Park | Gate Theatre | Brandenburg Gate | Ashton Gate | Michael's Gate | Menin Gate | Lions Gate Entertainment | Karl Johans gate | Heaven's Gate | Dragon Gate | India Gate | Cosmic Gate | Barbarians at the Gate (film) | Steins;Gate | Squires Gate | Golden Gate University | Golden Gate Capital | Field-programmable gate array | Baldur's Gate | Ashton Gate Stadium | The Mezentian Gate | Prince's Gate | Heaven's Gate (religious group) | Golden Gate | Anubis Gate | Westland Gate | Tommaso Toffoli | The gate to SF's headquarters at Filmstaden | The Gate of Heavenly Peace |