Update jacobian_tape.py (#891)

PennyLaneAI · Nov 4, 2020 · 7ca83e4 · 7ca83e4
1 parent 91dea7a
commit 7ca83e4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/pennylane/tape/tapes/jacobian_tape.py b/pennylane/tape/tapes/jacobian_tape.py
@@ -61,12 +61,12 @@ class JacobianTape(QuantumTape):
 
         import pennylane.tape
 
-        with qml.tape.QuantumTape() as tape:
+        with qml.tape.JacobianTape() as tape:
             qml.RX(0.432, wires=0)
             qml.RY(0.543, wires=0)
             qml.CNOT(wires=[0, 'a'])
             qml.RX(0.133, wires='a')
-            expval(qml.PauliZ(wires=[0]))
+            qml.expval(qml.PauliZ(wires=[0]))
 
     The Jacobian is computed using finite difference: