def _discover_remote_backends(self):
"""Return the remote backends available.
Returns:
dict[str:IBMQBackend]: a dict of the remote backend instances,
keyed by backend name.
"""
ret = OrderedDict()
configs_list = self._api.available_backends()
for raw_config in configs_list:
try:
config = BackendConfiguration.from_dict(raw_config)
ret[config.backend_name] = IBMQBackend(
configuration=config,
provider=self._ibm_provider,
credentials=self.credentials,
api=self._api)
except ValidationError as ex:
logger.warning(
'Remote backend "%s" could not be instantiated due to an '
'invalid config: %s',
raw_config.get('backend_name',
raw_config.get('name', 'unknown')), ex)
return ret
def __init__(self, configuration=None, provider=None):
super().__init__(configuration=(configuration
or BackendConfiguration.from_dict(
self.DEFAULT_CONFIGURATION)),
provider=provider)
# Define attributes inside __init__.
self._unitary_state = None
self._number_of_qubits = 0
def configuration(self):
qx4_cmap = [[1, 0], [2, 0], [2, 1], [3, 2], [3, 4], [4, 2]]
return BackendConfiguration(
backend_name='fake_qx4',
backend_version='0.0.0',
n_qubits=5,
basis_gates=['u1', 'u2', 'u3', 'cx', 'id'],
simulator=False,
local=True,
conditional=False,
open_pulse=False,
gates=[GateConfig(name='TODO', parameters=[], qasm_def='TODO')],
coupling_map=qx4_cmap,
)
def __init__(self, configuration=None, provider=None):
super().__init__(configuration=(configuration or
BackendConfiguration.from_dict(self.DEFAULT_CONFIGURATION)),
provider=provider)
self._local_random = random.Random()
# Define attributes in __init__.
self._classical_state = 0
self._statevector = 0
self._snapshots = {}
self._number_of_cbits = 0
self._number_of_qubits = 0
self._shots = 0
self._memory = False
self._qobj_config = None
def _discover_remote_backends(self):
"""Return the remote backends available.
Returns:
dict[str:IBMQBackend]: a dict of the remote backend instances,
keyed by backend name.
"""
ret = OrderedDict()
configs_list = self._api.available_backends()
for raw_config in configs_list:
config = BackendConfiguration.from_dict(raw_config)
ret[config.backend_name] = IBMQBackend(
configuration=config,
provider=self._ibm_provider,
credentials=self.credentials,
api=self._api)
return ret
def __init__(self, configuration=None, provider=None):
super().__init__(configuration=(configuration or
BackendConfiguration.from_dict(self.DEFAULT_CONFIGURATION)),
provider=provider)
# Define attributes in __init__.
self._local_random = np.random.RandomState()
self._classical_state = 0
self._statevector = 0
self._number_of_cbits = 0
self._number_of_qubits = 0
self._shots = 0
self._memory = False
self._initial_statevector = self.DEFAULT_OPTIONS["initial_statevector"]
self._chop_threshold = self.DEFAULT_OPTIONS["chop_threshold"]
self._qobj_config = None
# TEMP
self._sample_measure = False
def configuration(self):
qx5_cmap = [[1, 0], [1, 2], [2, 3], [3, 4], [3, 14], [5, 4], [6, 5],
[6, 7], [6, 11], [7, 10], [8, 7], [9, 8], [9, 10],
[11, 10], [12, 5], [12, 11], [12, 13], [13, 4],
[13, 14], [15, 0], [15, 2], [15, 14]]
return BackendConfiguration(
backend_name='fake_qx5',
backend_version='0.0.0',
n_qubits=16,
basis_gates=['u1', 'u2', 'u3', 'cx', 'id'],
simulator=False,
local=True,
conditional=False,
open_pulse=False,
gates=[GateConfig(name='TODO', parameters=[], qasm_def='TODO')],
coupling_map=qx5_cmap,
)
def __init__(self, configuration=None, provider=None):
super().__init__(configuration=(configuration
or BackendConfiguration.from_dict(
self.DEFAULT_CONFIGURATION)),
provider=provider)
# Try to use the default executable if not specified.
if 'exe' in self._configuration:
paths = [self._configuration.exe]
else:
paths = DEFAULT_SIMULATOR_PATHS
# Ensure that the executable is available.
try:
self._configuration.exe = next(
path for path in paths
if (os.path.exists(path) and os.path.getsize(path) > 100))
except StopIteration:
raise FileNotFoundError(
'Simulator executable not found (using %s)' %
getattr(self._configuration, 'exe', 'default locations'))
def __init__(self, configuration=None, provider=None):
super().__init__(configuration=(configuration or
BackendConfiguration.from_dict(self.DEFAULT_CONFIGURATION)),
provider=provider)
