def test_seed(self):
"""Test that the circuit is fixed by the seed."""
weights = np.random.random((2, 3))
op1 = qml.RandomLayers(weights, wires=range(2), seed=41)
op2 = qml.RandomLayers(weights, wires=range(2), seed=42)
op3 = qml.RandomLayers(weights, wires=range(2), seed=42)
queue1 = op1.expand().operations
queue2 = op2.expand().operations
queue3 = op3.expand().operations
assert not all(g1.name == g2.name for g1, g2 in zip(queue1, queue2))
assert all(g2.name == g3.name for g2, g3 in zip(queue2, queue3))
def test_number_gates(self, n_layers, n_rots):
"""Test that the number of gates is correct."""
weights = np.random.randn(n_layers, n_rots)
op = qml.RandomLayers(weights, wires=range(2))
ops = op.expand().operations
gate_names = [g.name for g in ops]
assert len(gate_names) - gate_names.count("CNOT") == n_layers * n_rots
def test_ratio_imprimitive(self, ratio):
"""Test the ratio of imprimitive gates."""
n_rots = 500
weights = np.random.random(size=(1, n_rots))
op = qml.RandomLayers(weights, wires=range(2), ratio_imprim=ratio)
queue = op.expand().operations
gate_names = [gate.name for gate in queue]
ratio_impr = gate_names.count("CNOT") / len(gate_names)
assert np.isclose(ratio_impr, ratio, atol=0.05)
def test_random_wires(self):
"""Test that random wires are picked for the gates. This is done by
taking the mean of all wires, which should be 1 for labels [0, 1, 2]"""
n_rots = 5000
weights = np.random.random(size=(2, n_rots))
op = qml.RandomLayers(weights, wires=range(3))
queue = op.expand().operations
gate_wires = [gate.wires.labels for gate in queue]
wires_flat = [item for w in gate_wires for item in w]
mean_wire = np.mean(wires_flat)
assert np.isclose(mean_wire, 1, atol=0.05)
def circuit2():
qml.RandomLayers(weights, wires=["z", "a", "k"])
return qml.expval(qml.Identity("z"))
def circuit():
qml.RandomLayers(weights, wires=range(3))
return qml.expval(qml.Identity(0))
def circuit_template(weights):
qml.RandomLayers(weights, range(3), seed=42)
return qml.expval(qml.PauliZ(0))
def test_id(self):
"""Tests that the id attribute can be set."""
template = qml.RandomLayers(np.random.random(size=(1, 3)),
wires=range(3),
id="a")
assert template.id == "a"
def circuit(phi):
qml.RandomLayers(phi, wires=list(range(4)))
return qml.expval(qml.PauliZ(0))