mcx

comp-quantica · Mar 15, 2024 · e156f50 · e156f50
1 parent 64d1355
commit e156f50
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/qiskit/circuit/library/standard_gates/x.py b/qiskit/circuit/library/standard_gates/x.py
@@ -1475,7 +1475,7 @@ def _define(self):
             if self.num_ctrl_qubits < 3:
                 qc.mcx(q_controls, q_target)
             elif not self._relative_phase and self.num_ctrl_qubits == 3:
-                qc.mcx(q_controls, q_target)
+                qc._append(C3XGate(), [*q_controls, q_target], [])
             else:
                 num_ancillas = self.num_ctrl_qubits - 2
                 targets = [q_target] + q_ancillas[:num_ancillas][::-1]