Ansatz generation

qiskit_addon_aqc_tensor.ansatz_generation

Utility for generating a general, parametrized, ansatz circuit which matches the two-qubit connectivity of an input circuit.


`AnsatzBlock`	Ansatz block.
`OneQubitAnsatzBlock`	One-qubit ansatz block.
`TwoQubitAnsatzBlock`	Two-qubit ansatz block.
`ZXZ`	One-qubit ansatz block based on the ZXZ decomposition.
`KAK`	Two-qubit ansatz block based on the KAK decomposition.

generate_ansatz_from_circuit(qc, /, *, qubits_initially_zero=False, parameter_name='theta')[source]

Generate an ansatz from the two-qubit connectivity structure of a circuit.

See explanatatory material for motivation.

Parameters

qc (QuantumCircuit) – A circuit, which is assumed to be unitary. Barriers are ignored.
qubits_initially_zero (bool) – If True, the first Z rotation on each qubit is removed from the ansatz under the assumption that it has no effect.
parameter_name (str) – Name for the ParameterVector representing the free parameters in the returned ansatz circuit.

Return type

tuple [QuantumCircuit, list [float]]

Returns

(ansatz, parameter_values) such that ansatz.assign_parameters(parameter_values) is equivalent to qc up to a global phase.

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