qiskit.opflow.gradients.CircuitQFI.convert

abstract CircuitQFI.convert(operator, params)

Parameters

• operator (OperatorBase) – The operator corresponding to the quantum state $|\psi(\omega)\rangle$ for which we compute the QFI.

• params (Union[ParameterExpression, ParameterVector, List[ParameterExpression]]) – The parameters $\omega$ with respect to which we are computing the QFI.

Return type

OperatorBase

Returns

An operator whose evaluation yields the QFI metric tensor.

Raises

ValueError – If params contains a parameter not present in operator.