qiskit.circuit.AncillaQubit¶

class AncillaQubit(register=None, index=None)[source]¶

A qubit used as ancillary qubit.

Creates a qubit.

Parameters

register (QuantumRegister) – Optional. A quantum register containing the bit.
index (int) – Optional. The index of the bit in its containing register.

Raises

CircuitError – if the provided register is not a valid QuantumRegister

__init__(register=None, index=None)¶

Creates a qubit.

Parameters

register (QuantumRegister) – Optional. A quantum register containing the bit.
index (int) – Optional. The index of the bit in its containing register.

Raises

CircuitError – if the provided register is not a valid QuantumRegister

Methods

__init__([register, index])

Creates a qubit.

Attributes

`index`	Get bit’s index.
`register`	Get bit’s register.