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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 qubit [kyoo-bit] /ˈkyuˌbɪt/ (Show IPA).
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for quantum bit
  • The spin of an electron forms a quantum bit, also called a qubit.
quantum bit in Science
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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