qiskit.opflow.gradients.QFI.convert

QFI.convert(operator, params=None)

Parameters

• operator (CircuitStateFn) – The operator corresponding to the quantum state |ψ(ω)〉for which we compute the QFI

• params (Union[ParameterVector, ParameterExpression, List[ParameterExpression], None]) – The parameters we are computing the QFI wrt: ω If not explicitly passed, they are inferred from the operator and sorted by name.

Return type

ListOp

Returns

ListOp[ListOp] where the operator at position k,l corresponds to QFI_kl

Raises

ValueError – If operator is not parameterized.