qubit

English

Wikipedia

Etymology

Blend of quantum and bit, influenced by cubit.

Pronunciation

• (UK) IPA: /ˈkjuːbɪt/, X-SAMPA: /"kju:bIt/
• (US) enPR: kyo͞o'bĭt, IPA: /ˈkjubɪt/, X-SAMPA: /"kjubIt/
• Homophone: cubit

Noun

qubit (plural qubits)

1. (computing) A quantum bit; the unit of quantum information; a 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.

Synonyms

• qbit
• quantum bit

Derived terms

• multiqubit

Related terms

• qutrit

See also

• bit, nat, ban

Translations

quantum bit

• Esperanto: kvantumbito (eo)
• Finnish: kubitti (fi)
• French: qubit (fr) m
• Icelandic: skammtabiti (is) m

• Italian: qubit (it) m
• Portuguese: qubit (pt) m
• Spanish: qubit (es) m