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EtymologyEdit

Blend of quantum +‎ bit, influenced by cubit. Coined by American physicist Benjamin Schumacher in 1995.

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NounEdit

qubit (plural qubits)

  1. (computing) A quantum bit; the unit of quantum information described by a superposition of two states; a quantum bit in a quantum computer capable of being in a state of superposition.
    • 2012, ‘An uncertain future’, The Economist, 25 Feb 2012:
      Each extra qubit in a quantum machine doubles the number of simultaneous operations it can perform.

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PortugueseEdit

NounEdit

qubit m (plural qubits)

  1. (computing) qubit (quantum bit)