def test_heavy_hex_factory(self):
coupling = CouplingMap.from_heavy_hex(3, bidirectional=False)
edges = coupling.get_edges()
expected = [
(0, 9),
(0, 13),
(1, 13),
(1, 14),
(2, 14),
(3, 9),
(3, 15),
(4, 15),
(4, 16),
(5, 12),
(5, 16),
(6, 17),
(7, 17),
(7, 18),
(8, 12),
(8, 18),
(10, 14),
(10, 16),
(11, 15),
(11, 17),
]
self.assertEqual(set(edges), set(expected))
def setUp(self):
super().setUp()
self.cmap20 = FakeTokyo().configuration().coupling_map
self.target_19 = Target()
rng = np.random.default_rng(12345)
instruction_props = {
edge: InstructionProperties(duration=rng.uniform(1e-7, 1e-6),
error=rng.uniform(1e-4, 1e-3))
for edge in CouplingMap.from_heavy_hex(3).get_edges()
}
self.target_19.add_instruction(CXGate(), instruction_props)
def test_heavy_hex_factory_bidirectional(self):
coupling = CouplingMap.from_heavy_hex(3, bidirectional=True)
edges = coupling.get_edges()
expected = [
(0, 9),
(0, 13),
(1, 13),
(1, 14),
(2, 14),
(3, 9),
(3, 15),
(4, 15),
(4, 16),
(5, 12),
(5, 16),
(6, 17),
(7, 17),
(7, 18),
(8, 12),
(8, 18),
(9, 0),
(9, 3),
(10, 14),
(10, 16),
(11, 15),
(11, 17),
(12, 5),
(12, 8),
(13, 0),
(13, 1),
(14, 1),
(14, 2),
(14, 10),
(15, 3),
(15, 4),
(15, 11),
(16, 4),
(16, 5),
(16, 10),
(17, 6),
(17, 7),
(17, 11),
(18, 7),
(18, 8),
]
self.assertEqual(set(edges), set(expected))
def test_5q_circuit_19q_target_without_noise(self):
"""Test layout works finds a dense 5q subgraph in a 19q heavy hex target with no noise."""
qr = QuantumRegister(5, "q")
circuit = QuantumCircuit(qr)
circuit.cx(qr[0], qr[3])
circuit.cx(qr[3], qr[4])
circuit.cx(qr[3], qr[1])
circuit.cx(qr[0], qr[2])
dag = circuit_to_dag(circuit)
instruction_props = {
edge: None
for edge in CouplingMap.from_heavy_hex(3).get_edges()
}
noiseless_target = Target()
noiseless_target.add_instruction(CXGate, instruction_props)
pass_ = DenseLayout(target=noiseless_target)
pass_.run(dag)
layout = pass_.property_set["layout"]
self.assertEqual(layout[qr[0]], 1)
self.assertEqual(layout[qr[1]], 13)
self.assertEqual(layout[qr[2]], 0)
self.assertEqual(layout[qr[3]], 9)
self.assertEqual(layout[qr[4]], 3)