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quantum bit

   Also found in: Acronyms, Encyclopedia, Wikipedia 0.31 sec.
quantum bit
n.
The smallest unit of information in a computer designed to manipulate or store information through effects predicted by quantum physics. Unlike bits in classical systems, a quantum bit has more than two possible states: a state labeled 0, a state labeled 1, and a combination of the two states that obeys the superposition principle.
quantum bit
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.


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