Ansatz

class Ansatz

Bases: ABC

Abstract base class for all VQE ansätze.

Attributes Summary

name	Returns the human-readable name of the ansatz.

Methods Summary

build(params, n_qubits, n_layers, **kwargs)	Builds the ansatz circuit and returns a list of operations.
n_params_per_layer(n_qubits, **kwargs)	Returns the number of parameters required by the ansatz for one layer.

Attributes Documentation

name

Returns the human-readable name of the ansatz.

Methods Documentation

abstractmethod build(params, n_qubits, n_layers, **kwargs)

Builds the ansatz circuit and returns a list of operations.

Parameters:

• params – Parameter array for the ansatz.

• n_qubits (int) – Number of qubits in the circuit.

• n_layers (int) – Number of ansatz layers.

• **kwargs – Additional arguments specific to the ansatz.

Returns:

The ansatz circuit on n_qubits qubits.

Return type:

QuantumCircuit

abstractmethod static n_params_per_layer(n_qubits, **kwargs)

Returns the number of parameters required by the ansatz for one layer.

Return type:

int