@qml.qnode(qubit_device_1_wire, interface='tf')
def circuit(dummy1, array, dummy2):
    qml.RY((0.5 * array[(0, 1)]), wires=0)
    qml.RY(((- 0.5) * array[(1, 1)]), wires=0)
    return qml.expval(qml.PauliX(0))
@qml.qnode(qubit_device_1_wire, interface='tf')
def circuit(dummy1, array, dummy2):
    qml.RY((0.5 * array[(0, 1)]), wires=0)
    qml.RY(((- 0.5) * array[(1, 1)]), wires=0)
    return qml.expval(qml.PauliX(0))