def test_qv_failure_insufficient_confidence(self):
"""
Test that the quantum volume is unsuccessful when:
there are more than 100 trials, the heavy output probability mean is more than 2/3
but the confidence is not high enough
"""
dir_name = os.path.dirname(os.path.abspath(__file__))
insufficient_confidence_json = "qv_data_moderate_noise_100_trials.json"
with open(os.path.join(dir_name, insufficient_confidence_json),
"r") as json_file:
insufficient_confidence_data = json.load(json_file,
cls=ExperimentDecoder)
num_of_qubits = 4
backend = Aer.get_backend("aer_simulator")
qv_exp = QuantumVolume(num_of_qubits, seed=SEED)
exp_data = ExperimentData(experiment=qv_exp, backend=backend)
exp_data.add_data(insufficient_confidence_data)
qv_exp.run_analysis(exp_data)
qv_result = exp_data.analysis_results(1)
self.assertTrue(
qv_result.extra["success"] is False and qv_result.value == 1,
"quantum volume is successful with insufficient confidence",
)
def test_qv_failure_insufficient_trials(self):
"""
Test that the quantum volume is unsuccessful when:
there is less than 100 trials
"""
dir_name = os.path.dirname(os.path.abspath(__file__))
insufficient_trials_json_file = "qv_data_70_trials.json"
with open(os.path.join(dir_name, insufficient_trials_json_file),
"r") as json_file:
insufficient_trials_data = json.load(json_file,
cls=ExperimentDecoder)
num_of_qubits = 3
backend = Aer.get_backend("aer_simulator")
qv_exp = QuantumVolume(num_of_qubits, seed=SEED)
exp_data = ExperimentData(experiment=qv_exp, backend=backend)
exp_data.add_data(insufficient_trials_data)
qv_exp.run_analysis(exp_data)
qv_result = exp_data.analysis_results(1)
self.assertTrue(
qv_result.extra["success"] is False and qv_result.value == 1,
"quantum volume is successful with less than 100 trials",
)
def test_qv_success(self):
"""
Test a successful run of quantum volume.
Compare the results to a pre-run experiment
"""
dir_name = os.path.dirname(os.path.abspath(__file__))
successful_json_file = "qv_data_moderate_noise_300_trials.json"
with open(os.path.join(dir_name, successful_json_file),
"r") as json_file:
successful_data = json.load(json_file, cls=ExperimentDecoder)
num_of_qubits = 4
backend = Aer.get_backend("aer_simulator")
qv_exp = QuantumVolume(num_of_qubits, seed=SEED)
exp_data = ExperimentData(experiment=qv_exp, backend=backend)
exp_data.add_data(successful_data)
qv_exp.run_analysis(exp_data)
results_json_file = "qv_result_moderate_noise_300_trials.json"
with open(os.path.join(dir_name, results_json_file), "r") as json_file:
successful_results = json.load(json_file, cls=ExperimentDecoder)
results = exp_data.analysis_results()
for result, reference in zip(results, successful_results):
self.assertEqual(
result.value,
reference["value"],
"result value is not the same as precalculated analysis",
)
self.assertEqual(
result.name,
reference["name"],
"result name is not the same as precalculated analysis",
)
for key, value in reference["extra"].items():
if isinstance(value, float):
self.assertAlmostEqual(
result.extra[key],
value,
msg="result " + str(key) + " is not the same as the "
"pre-calculated analysis",
)
else:
self.assertTrue(
result.extra[key] == value,
"result " + str(key) + " is not the same as the "
"pre-calculated analysis",
)