Ancilla (quantum computing)
Encyclopedia
An ancilla bit is a fixed input bit into a logic gate. In reversible quantum computing circuits, an ancilla bit is a prepared fixed qubit
state used for input to a gate to give the gate a more specific logic function (i.e. CNOT to NOT, Toffoli to NOT).
Qubit
In quantum computing, a qubit or quantum bit is a unit of quantum information—the quantum analogue of the classical bit—with additional dimensions associated to the quantum properties of a physical atom....
state used for input to a gate to give the gate a more specific logic function (i.e. CNOT to NOT, Toffoli to NOT).