qiskit.chemistry.algorithms.GroundStateSolver.evaluate_operators

abstract GroundStateSolver.evaluate_operators(state, operators)

Evaluates additional operators at the given state.

Parameters

• state (Union[str, dict, Result, list, ndarray, Statevector, QuantumCircuit, Instruction, OperatorBase]) – any kind of input that can be used to specify a state. See also StateFn for more details.

• operators (Union[WeightedPauliOperator, OperatorBase, list, dict]) – either a single, list or dictionary of WeightedPauliOperator``s or any kind of operator implementing the ``OperatorBase.

Return type

Union[float, List[float], Dict[str, List[float]]]

Returns

The expectation value of the given operator(s). The return type will be identical to the format of the provided operators.