quantum bit

noun
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 qubit [kyoo-bit] .
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World English Dictionary
qubit (ˈkjuːbɪt)
 
n
computing a quantum bit
 
[C20: from qu(antum) + bit4]

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Science Dictionary
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.
qubit   (ky'bĭt')  Pronunciation Key 
See quantum bit.
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Example sentences
The same holds true for a bit in a quantum computer, called a qubit.
The spin of an electron forms a quantum bit, also called a qubit.
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