qubit

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

• (UK) IPA^(key): /ˈkjuːbɪt/
• (US) enPR: kyo͞o'bĭt, IPA^(key): /ˈkjubɪt/
• Homophone: cubit

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.

• qbit
• quantum bit

• multiqubit

• qumix
• quregister
• qutrit
• qudit

• bit, nat, ban

qubit m (plural qubits)

1. (computing) qubit (quantum bit)