def test_final_measurement_barrier_for_simulators(self, mock_pass):
"""Verify BarrierBeforeFinalMeasurements pass is in default pipeline for simulators."""
circ = QuantumCircuit.from_qasm_file(self._get_resource_path('example.qasm', Path.QASMS))
dag_circuit = circuit_to_dag(circ)
transpile_dag(dag_circuit)
self.assertTrue(mock_pass.called)
def test_final_measurement_barrier_for_devices(self, mock_pass):
"""Verify BarrierBeforeFinalMeasurements pass is called in default pipeline for devices."""
circ = QuantumCircuit.from_qasm_file(self._get_resource_path('example.qasm', Path.QASMS))
dag_circuit = circuit_to_dag(circ)
transpile_dag(dag_circuit, coupling_map=FakeRueschlikon().configuration().coupling_map)
self.assertTrue(mock_pass.called)
def test_move_measurements(self):
"""Measurements applied AFTER swap mapping.
"""
backend = FakeQX5BackEnd()
cmap = backend.configuration().coupling_map
circ = QuantumCircuit.from_qasm_file(
self._get_resource_path('qasm/move_measurements.qasm'))
dag_circuit = DAGCircuit.fromQuantumCircuit(circ)
lay = {
('qa', 0): ('q', 0),
('qa', 1): ('q', 1),
('qb', 0): ('q', 15),
('qb', 1): ('q', 2),
('qb', 2): ('q', 14),
('qN', 0): ('q', 3),
('qN', 1): ('q', 13),
('qN', 2): ('q', 4),
('qc', 0): ('q', 12),
('qNt', 0): ('q', 5),
('qNt', 1): ('q', 11),
('qt', 0): ('q', 6)
}
out_dag = transpile_dag(dag_circuit,
initial_layout=lay,
coupling_map=cmap,
format='dag')
moved_meas = remove_last_measurements(out_dag, perform_remove=False)
meas_nodes = out_dag.get_named_nodes('measure')
self.assertEqual(len(moved_meas), len(meas_nodes))
def test_move_measurements(self):
"""Measurements applied AFTER swap mapping.
"""
backend = FakeRueschlikon()
cmap = backend.configuration().coupling_map
circ = QuantumCircuit.from_qasm_file(
self._get_resource_path('move_measurements.qasm', Path.QASMS))
dag_circuit = circuit_to_dag(circ)
lay = {
('qa', 0): ('q', 0),
('qa', 1): ('q', 1),
('qb', 0): ('q', 15),
('qb', 1): ('q', 2),
('qb', 2): ('q', 14),
('qN', 0): ('q', 3),
('qN', 1): ('q', 13),
('qN', 2): ('q', 4),
('qc', 0): ('q', 12),
('qNt', 0): ('q', 5),
('qNt', 1): ('q', 11),
('qt', 0): ('q', 6)
}
out_dag = transpile_dag(dag_circuit,
initial_layout=lay,
coupling_map=cmap)
meas_nodes = out_dag.get_named_nodes('measure')
for n in meas_nodes:
is_last_measure = all([
after_measure in out_dag.output_map.values()
for after_measure in out_dag.quantum_successors(n)
])
self.assertTrue(is_last_measure)
