def test_exception_wrong_shape(self, state_vector):
"""Verifies that exception is raised if the
number of dimensions of features is incorrect."""
with pytest.raises(ValueError,
match="State vectors must be one-dimensional"):
qml.MottonenStatePreparation(state_vector, 2)
def test_error_state_vector_not_normalized(self, state_vector, wires):
"""Tests that the correct error messages is raised if
the given state vector is not normalized."""
with pytest.raises(ValueError,
match="State vectors have to be of norm"):
qml.MottonenStatePreparation(state_vector, wires)
def test_error_num_entries(self, state_vector, wires):
"""Tests that the correct error messages is raised if
the number of entries in the given state vector does not match
with the number of wires in the system."""
with pytest.raises(ValueError,
match="State vectors must be of (length|shape)"):
qml.MottonenStatePreparation(state_vector, wires)
def circuit(inputs):
qml.MottonenStatePreparation(inputs, wires=[0, 1])
return qml.probs(wires=[0, 1])
def circuit(state_vector):
qml.MottonenStatePreparation(state_vector, wires=range(1))
return qml.expval(qml.PauliZ(0))
def test_id(self):
"""Tests that the id attribute can be set."""
template = qml.MottonenStatePreparation(np.array([0, 1]),
wires=[0],
id="a")
assert template.id == "a"
def circuit2():
qml.MottonenStatePreparation(state, wires=["z", "a", "k"])
return qml.expval(qml.Identity("z"))
def circuit():
qml.MottonenStatePreparation(state, wires=range(3))
return qml.expval(qml.Identity(0))
def circuit():
qml.MottonenStatePreparation(state_vector, wires)
return qml.expval(qml.PauliZ(0)), qml.expval(
qml.PauliZ(1)), qml.expval(qml.PauliZ(2))