qubit

1. (quantum computing) A quantum bit; the basic 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; A binary qudit.Examples: "Quantum computing, on the other hand, is based on quantum bits, or qubits."; "Each extra qubit in a quantum machine doubles the number of simultaneous operations it can perform."; "Google’s Sycamore computer has all of 53 qubits to its name, as does a new IBM computer, installed online at the company’s Quantum Computation Center in Poughkeepsie, N.Y. System One, IBM’s black cube from tomorrow, only has 20 qubits."Synonyms: qbit, quantum bit