def test_rotations(self, rotation):
"""Checks the queue for the specified rotation settings."""
op = qml.AngleEmbedding(features=[1, 1, 1], wires=range(4), rotation=rotation)
tape = op.expand()
for gate in tape.operations:
assert gate.name == "R" + rotation
def test_expansion(self, features):
"""Checks the queue for the default settings."""
op = qml.AngleEmbedding(features=features, wires=range(4))
tape = op.expand()
assert len(tape.operations) == len(features)
for gate in tape.operations:
assert gate.name == "RX"
assert gate.parameters[0] == 1
def circuit2():
qml.AngleEmbedding(features, wires=["z", "a", "k"])
return qml.expval(qml.Identity("z"))
def circuit():
qml.AngleEmbedding(features, wires=range(3))
return qml.expval(qml.Identity(0))
def circuit(x=None):
qml.AngleEmbedding(features=x, wires=range(5))
return [qml.expval(qml.PauliZ(i)) for i in range(5)]
def circuit(x=None):
qml.AngleEmbedding(features=x, wires=range(4), rotation="X")
qml.PauliX(wires=0)
qml.AngleEmbedding(features=x, wires=range(4), rotation="X")
return [qml.expval(qml.PauliZ(i)) for i in range(4)]
def circuit_template(features):
qml.AngleEmbedding(features, range(3))
qml.CNOT(wires=[2, 1])
qml.CNOT(wires=[1, 0])
return qml.expval(qml.PauliZ(0))
def test_id(self):
"""Tests that the id attribute can be set."""
template = qml.AngleEmbedding(np.array([1, 2]), wires=[0, 1], id="a")
assert template.id == "a"
def circuit(x=None):
qml.AngleEmbedding(features=x, wires=range(1))
return qml.expval(qml.PauliZ(0))
adjoint(adjoint(my_op))()
return qml.state()
np.testing.assert_allclose(my_circuit(),
np.array([-0.995707, 0.068644 + 6.209710e-02j]),
atol=1e-6,
rtol=1e-6)
with qml.tape.JacobianTape() as tape:
qml.PauliX(0)
qml.Hadamard(1)
noncallable_objects = [
qml.RX(0.2, wires=0),
qml.AngleEmbedding(list(range(2)), wires=range(2)),
[qml.Hadamard(1), qml.RX(-0.2, wires=1)],
tape,
]
@pytest.mark.parametrize("obj", noncallable_objects)
def test_error_adjoint_on_noncallable(obj):
"""Test that an error is raised if qml.adjoint is applied to an object that
is not callable, as it silently does not have any effect on those."""
with pytest.raises(ValueError, match=f"{type(obj)} is not callable."):
adjoint(obj)
class TestOutsideOfQueuing:
"""Test that operations and templates work with the adjoint transform when
def custom_basic_entangler_layers(weights, wires):
return [
qml.AngleEmbedding(weights, wires=wires),
qml.broadcast(qml.CNOT, pattern="ring", wires=wires),
]
