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fake_backend_v2.py
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fake_backend_v2.py
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# This code is part of Qiskit.
#
# (C) Copyright IBM 2021.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
# pylint: disable=no-name-in-module,import-error
"""Mock BackendV2 object without run implemented for testing backwards compat"""
import datetime
import numpy as np
from qiskit.circuit.parameter import Parameter
from qiskit.circuit.measure import Measure
from qiskit.circuit.library.standard_gates import (
CXGate,
UGate,
ECRGate,
RXGate,
SXGate,
XGate,
RZGate,
)
from qiskit.providers.backend import BackendV2, QubitProperties
from qiskit.providers.options import Options
from qiskit.transpiler import Target, InstructionProperties
from qiskit.providers.basicaer.qasm_simulator import QasmSimulatorPy
class FakeBackendV2(BackendV2):
"""A mock backend that doesn't implement run() to test compatibility with Terra internals."""
def __init__(self):
super().__init__(
None,
name="FakeV2",
description="A fake BackendV2 example",
online_date=datetime.datetime.utcnow(),
backend_version="0.0.1",
)
self._qubit_properties = [
QubitProperties(t1=63.48783e-6, t2=112.23246e-6, frequency=5.17538e9),
QubitProperties(t1=73.09352e-6, t2=126.83382e-6, frequency=5.26722e9),
]
self._target = Target(qubit_properties=self._qubit_properties)
self._theta = Parameter("theta")
self._phi = Parameter("phi")
self._lam = Parameter("lambda")
rx_props = {
(0,): InstructionProperties(duration=5.23e-8, error=0.00038115),
(1,): InstructionProperties(duration=4.52e-8, error=0.00032115),
}
self._target.add_instruction(RXGate(self._theta), rx_props)
rx_30_props = {
(0,): InstructionProperties(duration=1.23e-8, error=0.00018115),
(1,): InstructionProperties(duration=1.52e-8, error=0.00012115),
}
self._target.add_instruction(RXGate(np.pi / 6), rx_30_props, name="rx_30")
u_props = {
(0,): InstructionProperties(duration=5.23e-8, error=0.00038115),
(1,): InstructionProperties(duration=4.52e-8, error=0.00032115),
}
self._target.add_instruction(UGate(self._theta, self._phi, self._lam), u_props)
cx_props = {
(0, 1): InstructionProperties(duration=5.23e-7, error=0.00098115),
}
self._target.add_instruction(CXGate(), cx_props)
measure_props = {
(0,): InstructionProperties(duration=6e-6, error=5e-6),
(1,): InstructionProperties(duration=1e-6, error=9e-6),
}
self._target.add_instruction(Measure(), measure_props)
ecr_props = {
(1, 0): InstructionProperties(duration=4.52e-9, error=0.0000132115),
}
self._target.add_instruction(ECRGate(), ecr_props)
self.options.set_validator("shots", (1, 4096))
@property
def target(self):
return self._target
@property
def max_circuits(self):
return None
@classmethod
def _default_options(cls):
return Options(shots=1024)
def run(self, run_input, **options):
raise NotImplementedError
class FakeBackendV2LegacyQubitProps(FakeBackendV2):
"""Fake backend that doesn't use qubit properties via the target."""
def qubit_properties(self, qubit):
if isinstance(qubit, int):
return self._qubit_properties[qubit]
return [self._qubit_properties[i] for i in qubit]
class FakeBackend5QV2(BackendV2):
"""A mock backend that doesn't implement run() to test compatibility with Terra internals."""
def __init__(self, bidirectional=True):
super().__init__(
None,
name="Fake5QV2",
description="A fake BackendV2 example",
online_date=datetime.datetime.utcnow(),
backend_version="0.0.1",
)
qubit_properties = [
QubitProperties(t1=63.48783e-6, t2=112.23246e-6, frequency=5.17538e9),
QubitProperties(t1=73.09352e-6, t2=126.83382e-6, frequency=5.26722e9),
QubitProperties(t1=73.09352e-6, t2=126.83382e-6, frequency=5.26722e9),
QubitProperties(t1=73.09352e-6, t2=126.83382e-6, frequency=5.26722e9),
QubitProperties(t1=73.09352e-6, t2=126.83382e-6, frequency=5.26722e9),
]
self._target = Target(qubit_properties=qubit_properties)
self._theta = Parameter("theta")
self._phi = Parameter("phi")
self._lam = Parameter("lambda")
u_props = {
(0,): InstructionProperties(duration=5.23e-8, error=0.00038115),
(1,): InstructionProperties(duration=4.52e-8, error=0.00032115),
(2,): InstructionProperties(duration=5.23e-8, error=0.00038115),
(3,): InstructionProperties(duration=4.52e-8, error=0.00032115),
(4,): InstructionProperties(duration=4.52e-8, error=0.00032115),
}
self._target.add_instruction(UGate(self._theta, self._phi, self._lam), u_props)
cx_props = {
(0, 1): InstructionProperties(duration=5.23e-7, error=0.00098115),
(3, 4): InstructionProperties(duration=5.23e-7, error=0.00098115),
}
if bidirectional:
cx_props[(1, 0)] = InstructionProperties(duration=6.23e-7, error=0.00099115)
cx_props[(4, 3)] = InstructionProperties(duration=7.23e-7, error=0.00099115)
self._target.add_instruction(CXGate(), cx_props)
measure_props = {
(0,): InstructionProperties(duration=6e-6, error=5e-6),
(1,): InstructionProperties(duration=1e-6, error=9e-6),
(2,): InstructionProperties(duration=6e-6, error=5e-6),
(3,): InstructionProperties(duration=1e-6, error=9e-6),
(4,): InstructionProperties(duration=1e-6, error=9e-6),
}
self._target.add_instruction(Measure(), measure_props)
ecr_props = {
(1, 2): InstructionProperties(duration=4.52e-9, error=0.0000132115),
(2, 3): InstructionProperties(duration=4.52e-9, error=0.0000132115),
}
if bidirectional:
ecr_props[(2, 1)] = InstructionProperties(duration=5.52e-9, error=0.0000232115)
ecr_props[(3, 2)] = InstructionProperties(duration=5.52e-9, error=0.0000232115)
self._target.add_instruction(ECRGate(), ecr_props)
self.options.set_validator("shots", (1, 4096))
@property
def target(self):
return self._target
@property
def max_circuits(self):
return None
@classmethod
def _default_options(cls):
return Options(shots=1024)
def run(self, run_input, **options):
raise NotImplementedError
class FakeBackendSimple(BackendV2):
"""A fake simple backend that wraps BasicAer to implement run()."""
def __init__(self):
super().__init__(
None,
name="FakeSimpleV2",
description="A fake simple BackendV2 example",
online_date=datetime.datetime.utcnow(),
backend_version="0.0.1",
)
self._lam = Parameter("lambda")
self._target = Target(num_qubits=20)
self._target.add_instruction(SXGate())
self._target.add_instruction(XGate())
self._target.add_instruction(RZGate(self._lam))
self._target.add_instruction(CXGate())
self._target.add_instruction(Measure())
self._runner = QasmSimulatorPy()
@property
def target(self):
return self._target
@property
def max_circuits(self):
return None
@classmethod
def _default_options(cls):
return QasmSimulatorPy._default_options()
def run(self, run_input, **options):
self._runner._options = self._options
return self._runner.run(run_input, **options)