def test_measurement_error_mitigation_with_dedicated_shots(self):
from qiskit import Aer
from qiskit.providers.aer import noise
aqua_globals.random_seed = 0
# build noise model
noise_model = noise.NoiseModel()
read_err = noise.errors.readout_error.ReadoutError([[0.9, 0.1], [0.25, 0.75]])
noise_model.add_all_qubit_readout_error(read_err)
backend = Aer.get_backend('qasm_simulator')
quantum_instance = QuantumInstance(backend=backend, seed_simulator=1679, seed_transpiler=167, shots=100,
noise_model=noise_model,
measurement_error_mitigation_cls=CompleteMeasFitter,
cals_matrix_refresh_period=0)
input = 'a & b & c'
oracle = LogicalExpressionOracle(input)
grover = Grover(oracle)
_ = grover.run(quantum_instance)
cals_matrix_1, timestamp_1 = quantum_instance.cals_matrix(qubit_index=[0, 1, 2])
quantum_instance.measurement_error_mitigation_shots = 1000
_ = grover.run(quantum_instance)
cals_matrix_2, timestamp_2 = quantum_instance.cals_matrix(qubit_index=[0, 1, 2])
diff = cals_matrix_1 - cals_matrix_2
total_diff = np.sum(np.abs(diff))
self.assertGreater(total_diff, 0.0)
self.assertGreater(timestamp_2, timestamp_1)
def test_measurement_error_mitigation_with_dedicated_shots(self):
""" measurement error mitigation with dedicated shots test """
# pylint: disable=import-outside-toplevel
try:
from qiskit import Aer
from qiskit.providers.aer import noise
except ImportError as ex: # pylint: disable=broad-except
self.skipTest(
"Aer doesn't appear to be installed. Error: '{}'".format(
str(ex)))
return
aqua_globals.random_seed = 0
# build noise model
noise_model = noise.NoiseModel()
read_err = noise.errors.readout_error.ReadoutError([[0.9, 0.1],
[0.25, 0.75]])
noise_model.add_all_qubit_readout_error(read_err)
backend = Aer.get_backend('qasm_simulator')
quantum_instance = QuantumInstance(
backend=backend,
seed_simulator=1679,
seed_transpiler=167,
shots=100,
noise_model=noise_model,
measurement_error_mitigation_cls=CompleteMeasFitter,
cals_matrix_refresh_period=0)
oracle = LogicalExpressionOracle('a & b & c')
grover = Grover(oracle)
_ = grover.run(quantum_instance)
self.assertGreater(quantum_instance.time_taken, 0.)
quantum_instance.reset_execution_results()
cals_matrix_1, timestamp_1 = quantum_instance.cals_matrix(
qubit_index=[0, 1, 2])
quantum_instance.measurement_error_mitigation_shots = 1000
_ = grover.run(quantum_instance)
cals_matrix_2, timestamp_2 = quantum_instance.cals_matrix(
qubit_index=[0, 1, 2])
diff = cals_matrix_1 - cals_matrix_2
total_diff = np.sum(np.abs(diff))
self.assertGreater(total_diff, 0.0)
self.assertGreater(timestamp_2, timestamp_1)
