def test_pad_no_delay_on_classical_io_channels(self):
"""Test padding does not apply to classical IO channels."""
delay = 10
sched = (
Delay(delay, MemorySlot(0)).shift(20)
+ Delay(delay, RegisterSlot(0)).shift(10)
+ Delay(delay, SnapshotChannel())
)
ref_sched = (
Delay(delay, MemorySlot(0)).shift(20)
+ Delay(delay, RegisterSlot(0)).shift(10)
+ Delay(delay, SnapshotChannel())
)
self.assertEqual(transforms.pad(sched, until=15), ref_sched)
def test_default(self):
"""Test default snapshot channel.
"""
snapshot_channel = SnapshotChannel()
self.assertEqual(snapshot_channel.index, 0)
self.assertEqual(snapshot_channel.name, 's0')
def __init__(self,
label: str,
snapshot_type: str = 'statevector',
name: str = None):
"""Create new snapshot command.
Args:
label: Snapshot label which is used to identify the snapshot in the output
snapshot_type: Type of snapshot, e.g., “state” (take a snapshot of the quantum state)
The types of snapshots offered are defined in a separate specification
document for simulators
name: Snapshot name which defaults to label, but can be different than label
This parameter is only for display purposes and is not taken into account during
comparison
"""
self._type = snapshot_type
self._channel = SnapshotChannel()
Command.__init__(self, duration=0)
self._label = Snapshot.create_name(label)
if name is not None:
self._name = Snapshot.create_name(name)
else:
self._name = self._label
Instruction.__init__(self, self, self._channel, name=self.name)
self._buffer = 0
def test_default(self):
"""Test default snapshot channel."""
snapshot_channel = SnapshotChannel()
self.assertEqual(snapshot_channel.index, 0)
self.assertEqual(snapshot_channel.name, "s0")
self.assertTrue(isinstance(snapshot_channel, ClassicalIOChannel))
def test_delay_snapshot_channel(self):
"""Test Delay on DriveChannel"""
snapshot_ch = SnapshotChannel()
snapshot = Snapshot(label='test')
# should pass as is an append
sched = Delay(self.delay_time, snapshot_ch) + snapshot
self.assertIsInstance(sched, Schedule)
# should fail due to overlap
with self.assertRaises(PulseError):
sched = Delay(self.delay_time, snapshot_ch) | snapshot << 5
self.assertIsInstance(sched, Schedule)
def __init__(self, name: str, snap_type: str):
"""Create new snapshot command.
Args:
name (str): Snapshot name which is used to identify the snapshot in the output.
snap_type (str): Type of snapshot, e.g., “state” (take a snapshot of the quantum state).
The types of snapshots offered are defined in a separate specification
document for simulators.
"""
self._type = snap_type
self._channel = SnapshotChannel()
Command.__init__(self, duration=0, name=name)
Instruction.__init__(self, self, self._channel, name=name)
def __init__(self, label: str, snap_type: str, start_time: int = 0):
"""Create new snapshot command.
Args:
label (str): Snapshot label which is used to identify the snapshot in the output.
snap_type (str): Type of snapshot, e.g., “state” (take a snapshot of the quantum state).
The types of snapshots offered are defined in a separate specification
document for simulators.
start_time (int, optional): Begin time of snapshot. Defaults to 0.
"""
PulseCommand.__init__(self, duration=0)
Instruction.__init__(self, self, start_time, TimeslotCollection([]))
self._label = label
self._type = snap_type
self._channel = SnapshotChannel()
def __init__(self, label: str, snapshot_type: str = 'statevector', name: Optional[str] = None):
"""Create new snapshot.
Args:
label: Snapshot label which is used to identify the snapshot in the output.
snapshot_type: Type of snapshot, e.g., “state” (take a snapshot of the quantum state).
The types of snapshots offered are defined by the simulator used.
name: Snapshot name which defaults to ``label``. This parameter is only for display
purposes and is not taken into account during comparison.
"""
self._label = label
self._type = snapshot_type
if name is None:
name = self.label
super().__init__(0, SnapshotChannel(), name=name)
def __init__(self,
label: str,
snapshot_type: str = 'statevector',
name: Optional[str] = None):
"""Create new snapshot.
Args:
label: Snapshot label which is used to identify the snapshot in the output.
snapshot_type: Type of snapshot, e.g., “state” (take a snapshot of the quantum state).
The types of snapshots offered are defined by the simulator used.
name: Snapshot name which defaults to ``label``. This parameter is only for display
purposes and is not taken into account during comparison.
Raises:
PulseError: If snapshot label is invalid.
"""
if not isinstance(label, str):
raise PulseError('Snapshot label must be a string.')
self._channel = SnapshotChannel()
if name is None:
name = label
super().__init__(operands=(label, snapshot_type), name=name)