quantum bit

quantum bit noun

1. the fundamental unit of information in a quantum computer, capable of existing in two states, 0 or 1, simultaneously or at a different time.

Also called qu·bit [kyoo-bit] /ˈkyuˌbɪt/. quantum bit in Science quantum bit

1. The smallest unit of information in a quantum computer. Unlike bits in classical systems, which are in one of two possible states labelled 1 and 0, a quantum bit exists in a superposition of these two states, settling on one or the other only when a measurement of the state is made. Also called qubit