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Hardware1 Aliases

Qubit

The basic unit of quantum information.

Definition
A qubit is the quantum equivalent of a classical bit. Unlike a bit, which is either 0 or 1, a qubit can represent a range of states until it is measured.
Why it matters
Qubits determine how far a quantum system has moved beyond theory and into hardware that can support real workloads.
Aliases
quantum bit
Related signals
Quantum computingQPUFault tolerance