def make_lsgst_lists(opLabels, fiducialList, germList, maxLengthList):
singleOps = pc.to_circuits([(g, ) for g in opLabels])
lgstStrings = pc.create_lgst_circuits(fiducialList, fiducialList,
opLabels)
lsgst_list = pc.to_circuits([
()
]) # running list of all strings so far
if maxLengthList[0] == 0:
lsgst_listOfLists = [lgstStrings]
maxLengthList = maxLengthList[1:]
else:
lsgst_listOfLists = []
for maxLen in maxLengthList:
lsgst_list += pc.create_circuits("f0+R(germ,N)+f1",
f0=fiducialList,
f1=fiducialList,
germ=germList,
N=maxLen,
R=pc.repeat_with_max_length,
order=('germ', 'f0', 'f1'))
lsgst_listOfLists.append(
lt.remove_duplicates(lgstStrings + lsgst_list))
print("%d LSGST sets w/lengths" % len(lsgst_listOfLists),
map(len, lsgst_listOfLists))
return lsgst_listOfLists
def test_grasp_germ_set_optimization_force_strings(self):
forceStrs = pc.to_circuits([('Gx', ), ('Gy')])
soln = germsel.find_germs_grasp(self.neighbors,
self.germ_set,
alpha=0.1,
force=forceStrs,
**self.options)
for string in forceStrs:
self.assertIn(string, soln)
def test_optimize_integer_germs_slack_force_strings(self):
forceStrs = pc.to_circuits([('Gx', ), ('Gy')])
finalGerms = germsel.find_germs_integer_slack(
self.mdl_target_noisy,
self.germ_set,
fixed_slack=0.1,
force=forceStrs,
verbosity=4,
)
def test_optimize_integer_fiducials_slack_insufficient_fiducials(self):
insuff_fids = pc.to_circuits([('Gx', )])
weights = np.ones(len(insuff_fids), 'i')
fiducials = fs._find_fiducials_integer_slack(self.model,
insuff_fids,
fixed_slack=0.1,
initial_weights=weights,
**self.options)
self.assertIsNone(fiducials)
def test_bulk_evaltree(self):
# Test tree construction
circuits = pc.to_circuits([('Gx', ), ('Gy', ), ('Gx', 'Gy'),
('Gy', 'Gy'), ('Gy', 'Gx'),
('Gx', 'Gx', 'Gx'), ('Gx', 'Gy', 'Gx'),
('Gx', 'Gy', 'Gy'), ('Gy', 'Gy', 'Gy'),
('Gy', 'Gx', 'Gx')])
layout = self.model.sim.create_layout(circuits)
def setUpClass(cls):
super(DirectXTester, cls).setUpClass()
cls._tgt = fixtures.model.copy()
cls.prepStrs = fixtures.fiducials
cls.effectStrs = fixtures.fiducials
cls.strs = pc.to_circuits([
(), # always need empty string
('Gx', ),
('Gy', ),
('Gi', ), # need these for include_target_ops=True
('Gx', 'Gx'),
('Gx', 'Gy', 'Gx') # additional
])
expstrs = pc.create_circuits("f0+base+f1",
order=['f0', 'f1', 'base'],
f0=fixtures.fiducials,
f1=fixtures.fiducials,
base=cls.strs)
cls._ds = pdata.simulate_data(fixtures.datagen_gateset.copy(),
expstrs,
1000,
'multinomial',
seed=_SEED)
def test_build_up_breadth_force_strings(self):
forceStrs = pc.to_circuits([('Gx', ), ('Gy')])
germs = germsel.find_germs_breadthfirst(self.neighbors,
self.germ_set,
force=forceStrs,
**self.options)
def run_linear_gst(data_filename_or_set,
target_model_filename_or_object,
prep_fiducial_list_or_filename,
meas_fiducial_list_or_filename,
gauge_opt_params=None,
advanced_options=None,
comm=None,
mem_limit=None,
output_pkl=None,
verbosity=2):
"""
Perform Linear Gate Set Tomography (LGST).
This function differs from the lower level :function:`run_lgst` function
in that it may perform a post-LGST gauge optimization and this routine
returns a :class:`Results` object containing the LGST estimate.
Overall, this is a high-level driver routine which can be used similarly
to :function:`run_long_sequence_gst` whereas `run_lgst` is a low-level
routine used when building your own algorithms.
Parameters
----------
data_filename_or_set : DataSet or string
The data set object to use for the analysis, specified either directly
or by the filename of a dataset file (assumed to be a pickled `DataSet`
if extension is 'pkl' otherwise assumed to be in pyGSTi's text format).
target_model_filename_or_object : Model or string
The target model specifying the gates and SPAM elements that LGST is to be run on,
given either directly or by the filename of a model file (text format).
prep_fiducial_list_or_filename : (list of Circuits) or string
The state preparation fiducial circuits, specified either directly
or by the filename of a circuit list file (text format).
meas_fiducial_list_or_filename : (list of Circuits) or string or None
The measurement fiducial circuits, specified either directly or by
the filename of a circuit list file (text format). If ``None``,
then use the same strings as specified by prep_fiducial_list_or_filename.
gauge_opt_params : dict, optional
A dictionary of arguments to :func:`gaugeopt_to_target`, specifying
how the final gauge optimization should be performed. The keys and
values of this dictionary may correspond to any of the arguments
of :func:`gaugeopt_to_target` *except* for the first `model`
argument, which is specified internally. The `target_model` argument,
*can* be set, but is specified internally when it isn't. If `None`,
then the dictionary `{'item_weights': {'gates':1.0, 'spam':0.001}}`
is used. If `False`, then then *no* gauge optimization is performed.
advanced_options : dict, optional
Specifies advanced options most of which deal with numerical details of
the objective function or expert-level functionality. See
:function:`run_long_sequence_gst`.
comm : mpi4py.MPI.Comm, optional
When not ``None``, an MPI communicator for distributing the computation
across multiple processors. In this LGST case, this is just the gauge
optimization.
mem_limit : int or None, optional
A rough memory limit in bytes which restricts the amount of memory
used (per core when run on multi-CPUs).
output_pkl : str or file, optional
If not None, a file(name) to `pickle.dump` the returned `Results` object
to (only the rank 0 process performs the dump when `comm` is not None).
verbosity : int, optional
The 'verbosity' option is an integer specifying the level of
detail printed to stdout during the calculation.
Returns
-------
Results
"""
printer = _baseobjs.VerbosityPrinter.create_printer(verbosity, comm)
advanced_options = _GSTAdvancedOptions(advanced_options or {})
ds = _load_dataset(data_filename_or_set, comm, printer)
target_model = _load_model(target_model_filename_or_object)
if isinstance(target_model, _ProcessorSpec): # for backward compatibility
_warnings.warn((
"You passed a processor spec to 'run_linear_gst' when you really should have passed a"
" model. Trying to create an explicit model from the pspec w/Pauli prod basis and use it."
))
target_model = _create_explicit_model(target_model,
None,
ideal_gate_type='full',
basis='pp')
germs = _circuits.to_circuits(
[()] +
[(gl, )
for gl in target_model.primitive_op_labels]) # just the single gates
max_lengths = [1] # we only need maxLength == 1 when doing LGST
exp_design = _proto.StandardGSTDesign(
target_model.create_processor_spec(),
prep_fiducial_list_or_filename,
meas_fiducial_list_or_filename,
germs,
max_lengths,
sequenceRules=advanced_options.get('string_manipulation_rules', None),
op_label_aliases=advanced_options.get('op_label_aliases', None),
dscheck=ds,
actionIfMissing='raise',
verbosity=printer)
data = _proto.ProtocolData(exp_design, ds)
if gauge_opt_params is None:
gauge_opt_params = {'item_weights': {'gates': 1.0, 'spam': 0.001}}
gopt_suite = {'go0': gauge_opt_params} if gauge_opt_params else None
proto = _proto.LinearGateSetTomography(
target_model,
gopt_suite,
None,
_get_badfit_options(advanced_options),
printer,
name=advanced_options.get('estimate_label', None))
proto.profile = advanced_options.get('profile', 1)
proto.record_output = advanced_options.get('record_output', 1)
proto.oplabels = advanced_options.get('op_labels', 'default')
proto.oplabel_aliases = advanced_options.get('op_label_aliases', None)
proto.unreliable_ops = advanced_options.get(
'unreliable_ops', ['Gcnot', 'Gcphase', 'Gms', 'Gcn', 'Gcx', 'Gcz'])
results = proto.run(data, mem_limit, comm)
_output_to_pickle(results, output_pkl, comm)
return results
def setUp(self):
# TODO optimize
self.model = models.create_explicit_model_from_expressions(
[('Q0', )], ['Gi', 'Gx', 'Gy'],
["I(Q0)", "X(pi/2,Q0)", "Y(pi/2,Q0)"])
self.depolGateset = self.model.depolarize(op_noise=0.1)
def make_lsgst_lists(opLabels, fiducialList, germList, maxLengthList):
singleOps = pc.to_circuits([(g, ) for g in opLabels])
lgstStrings = pc.create_lgst_circuits(fiducialList, fiducialList,
opLabels)
lsgst_list = pc.to_circuits([
()
]) # running list of all strings so far
if maxLengthList[0] == 0:
lsgst_listOfLists = [lgstStrings]
maxLengthList = maxLengthList[1:]
else:
lsgst_listOfLists = []
for maxLen in maxLengthList:
lsgst_list += pc.create_circuits("f0+R(germ,N)+f1",
f0=fiducialList,
f1=fiducialList,
germ=germList,
N=maxLen,
R=pc.repeat_with_max_length,
order=('germ', 'f0', 'f1'))
lsgst_listOfLists.append(
lt.remove_duplicates(lgstStrings + lsgst_list))
print("%d LSGST sets w/lengths" % len(lsgst_listOfLists),
map(len, lsgst_listOfLists))
return lsgst_listOfLists
gates = ['Gi', 'Gx', 'Gy']
fiducials = pc.to_circuits([(), ('Gx', ), ('Gy', ), ('Gx', 'Gx'),
('Gx', 'Gx', 'Gx'), ('Gy', 'Gy', 'Gy')
]) # fiducials for 1Q MUB
germs = pc.to_circuits([('Gx', ), ('Gy', ), ('Gi', ), (
'Gx',
'Gy',
), (
'Gx',
'Gy',
'Gi',
), (
'Gx',
'Gi',
'Gy',
), (
'Gx',
'Gi',
'Gi',
), (
'Gy',
'Gi',
'Gi',
), (
'Gx',
'Gx',
'Gi',
'Gy',
), (
'Gx',
'Gy',
'Gy',
'Gi',
), (
'Gx',
'Gx',
'Gy',
'Gx',
'Gy',
'Gy',
)])
maxLengths = [0, 1, 2, 4, 8, 16, 32, 64, 128, 256]
self.lsgst_lists = make_lsgst_lists(gates, fiducials, germs,
maxLengths)
self.circuit_list = self.lsgst_lists[-1]
self.dataset = pdata.simulate_data(self.depolGateset,
self.circuit_list,
num_samples=1000,
sample_error='binomial',
seed=100)
def setUp(self):
super(LogLTester, self).setUp()
self.circuits = circuits.to_circuits([('Gx', ), ('Gy', ),
('Gx', 'Gx')])
def setUp(self):
super(FiducialPairReductionSmallData, self).setUp()
self.preps = pc.to_circuits([('Gx', )])
self.effects = self.preps
self.germs = pc.to_circuits([('Gx', ), ('Gy', )])
self.fiducial_pairs = [(0, 0)]
def test_find_sufficient_fiducial_pairs_per_germ_raises_on_insufficient_fiducials(
self):
insuff_fids = pc.to_circuits([('Gx', )])
with self.assertRaises(ValueError):
fpr.find_sufficient_fiducial_pairs_per_germ(
self.model, insuff_fids, insuff_fids, self.germs)
