def test_metadata():
qubits = cirq.LineQubit.range(4)
graph = nx.star_graph(3)
metadata = cirq.DeviceMetadata(qubits, graph)
assert metadata.qubit_set == frozenset(qubits)
assert metadata.nx_graph == graph
metadata = cirq.DeviceMetadata()
assert metadata.qubit_set is None
assert metadata.nx_graph is None
def test_metadata_equality():
qubits = cirq.LineQubit.range(4)
graph = nx.star_graph(3)
graph2 = nx.star_graph(3)
graph.add_edge(1, 2, directed=False)
graph2.add_edge(1, 2, directed=True)
eq = cirq.testing.EqualsTester()
eq.add_equality_group(cirq.DeviceMetadata(qubits, graph))
eq.add_equality_group(cirq.DeviceMetadata(qubits, graph2))
eq.add_equality_group(cirq.DeviceMetadata(qubits[1:], graph))
def test_metadata_json_load_logic():
qubits = cirq.LineQubit.range(4)
graph = nx.star_graph(3)
metadata = cirq.DeviceMetadata(qubits, graph)
str_rep = cirq.to_json(metadata)
assert metadata == cirq.read_json(json_text=str_rep)
qubits = None
graph = None
metadata = cirq.DeviceMetadata(qubits, graph)
str_rep = cirq.to_json(metadata)
output = cirq.read_json(json_text=str_rep)
assert metadata == output
def __init__(self, qubits: Sequence[cirq.Qid]) -> None:
"""Initializes a device with some qubits.
Args:
qubits (NamedQubit): Qubits on the device, exclusively unrelated to
a physical position.
Raises:
TypeError: If the wrong qubit type is provided.
ValueError: If the number of qubits is greater than the devices maximum.
"""
if len(qubits) > 0:
q_type = type(qubits[0])
for q in qubits:
if not isinstance(q, self.supported_qubit_type):
raise TypeError('Unsupported qubit type: {!r}. This device '
'supports qubit types: {}'.format(
q, self.supported_qubit_type))
if not type(q) is q_type:
raise TypeError("All qubits must be of same type.")
if len(qubits) > self.maximum_qubit_number:
raise ValueError('Too many qubits. {} accepts at most {} '
'qubits.'.format(type(self),
self.maximum_qubit_number))
self.gateset = PasqalGateset()
self.qubits = qubits
self._metadata = cirq.DeviceMetadata(
qubits,
nx.from_edgelist([(a, b) for a in qubits for b in qubits
if a != b]))
def __init__(self, qubits: Sequence[cirq.Qid]) -> None:
"""Initializes a device with some qubits.
Args:
qubits (NamedQubit): Qubits on the device, exclusively unrelated to
a physical position.
Raises:
TypeError: If the wrong qubit type is provided.
ValueError: If the number of qubits is greater than the devices maximum.
"""
if len(qubits) > 0:
q_type = type(qubits[0])
for q in qubits:
if not isinstance(q, self.supported_qubit_type):
raise TypeError('Unsupported qubit type: {!r}. This device '
'supports qubit types: {}'.format(
q, self.supported_qubit_type))
if not type(q) is q_type:
raise TypeError("All qubits must be of same type.")
if len(qubits) > self.maximum_qubit_number:
raise ValueError('Too many qubits. {} accepts at most {} '
'qubits.'.format(type(self),
self.maximum_qubit_number))
self.gateset = cirq.Gateset(
cirq.ParallelGateFamily(cirq.H),
cirq.ParallelGateFamily(cirq.PhasedXPowGate),
cirq.ParallelGateFamily(cirq.XPowGate),
cirq.ParallelGateFamily(cirq.YPowGate),
cirq.ParallelGateFamily(cirq.ZPowGate),
cirq.AnyIntegerPowerGateFamily(cirq.CNotPowGate),
cirq.AnyIntegerPowerGateFamily(cirq.CCNotPowGate),
cirq.AnyIntegerPowerGateFamily(cirq.CZPowGate),
cirq.AnyIntegerPowerGateFamily(cirq.CCZPowGate),
cirq.IdentityGate,
cirq.MeasurementGate,
unroll_circuit_op=False,
accept_global_phase_op=False,
)
self.qubits = qubits
self._metadata = cirq.DeviceMetadata(
qubits,
nx.from_edgelist([(a, b) for a in qubits for b in qubits
if a != b]))
def __init__(self,
qubits: Union[Sequence[cirq.LineQubit], int],
atol=1e-8):
"""Construct the device.
Args:
qubits: The qubits upon which this device acts or the number of qubits. If the number
of qubits, then the qubits will be `cirq.LineQubit`s from 0 to this number minus
one.
atol: The absolute tolerance used for gate calculations and decompositions.
"""
if isinstance(qubits, int):
self.qubits = frozenset(cirq.LineQubit.range(qubits))
else:
self.qubits = frozenset(qubits)
self.atol = atol
self._metadata = cirq.DeviceMetadata(self.qubits,
[(a, b) for a in self.qubits
for b in self.qubits if a != b])
def metadata(self):
return cirq.DeviceMetadata(self.qubits, None)
