qiskit.utils.get_entangler_map

get_entangler_map(map_type, num_qubits, offset=0)

Utility method to get an entangler map among qubits.

Parameters

• map_type (str) – ‘full’ entangles each qubit with all the subsequent ones ‘linear’ entangles each qubit with the next ‘sca’ (shifted circular alternating entanglement) is a circular entanglement where the ‘long’ entanglement is shifted by one position every block and every block the role or control/target qubits alternate
• num_qubits (int) – Number of qubits for which the map is needed
• offset (int) – Some map_types (e.g. ‘sca’) can shift the gates in the entangler map by the specified integer offset.

Returns

A map of qubit index to an array of indexes to which this should be entangled

Return type

list

Raises

ValueError – if map_type is not valid.