qiskit.circuit.AncillaQubit

class AncillaQubit(register, index)

A qubit used as ancillary qubit.

Creates a qubit.

Parameters

• register (QuantumRegister) – a quantum register.

• index (int) – the index to insert the qubit

Raises

CircuitError – if the provided register is not a valid QuantumRegister

__init__(register, index)

Creates a qubit.

Parameters

• register (QuantumRegister) – a quantum register.

• index (int) – the index to insert the qubit

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.

property index

Get bit’s index.

property register

Get bit’s register.