QuantumCircuit: Inform user when Aer backend is not initialized

rht · Jul 12, 2022 · 27d934f · 27d934f
1 parent 925d8cb
commit 27d934f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/qiskit/circuit/quantumcircuit.py b/qiskit/circuit/quantumcircuit.py
@@ -4762,6 +4762,12 @@ def qubit_stop_time(self, *qubits: Union[Qubit, int]) -> float:
 
         return 0  # If there are no instructions over bits
 
+    def save_statevector(self, label="statevector", pershot=False, conditional=False):
+        raise NotImplementedError(
+            "To use this method, you must first initialize the Aer simulator backend, e.g. "
+            'backend = Aer.get_backend("aer_simulator")'
+        )
+
 
 def _circuit_from_qasm(qasm: Qasm) -> "QuantumCircuit":
     # pylint: disable=cyclic-import