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Add missing test coverage for RZXCalibration builder with target #9416

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Merged
mergify merged 2 commits into from
Jan 23, 2023
Merged

Add missing test coverage for RZXCalibration builder with target #9416

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93e96c4
Add missing test coverage for RZXCalibration builder with target
mtreinish Jan 23, 2023
59710f8
Merge branch 'main' into fix-rzx-cal-build-target
mergify[bot] Jan 23, 2023
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5 changes: 2 additions & 3 deletions qiskit/transpiler/passes/calibration/rzx_builder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,9 +84,6 @@ def __init__(
"""
super().__init__()

if instruction_schedule_map is None:
raise QiskitError("Calibrations can only be added to Pulse-enabled backends")

if qubit_channel_mapping:
warnings.warn(
"'qubit_channel_mapping' is no longer used. This value is ignored.",
Expand All @@ -97,6 +94,8 @@ def __init__(
self._verbose = verbose
if target:
self._inst_map = target.instruction_schedule_map()
if self._inst_map is None:
raise QiskitError("Calibrations can only be added to Pulse-enabled backends")

def supported(self, node_op: CircuitInst, qubits: List) -> bool:
"""Determine if a given node supports the calibration.
Expand Down
128 changes: 127 additions & 1 deletion test/python/transpiler/test_calibrationbuilder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@

from qiskit import circuit, schedule
from qiskit.circuit.library.standard_gates import SXGate, RZGate
from qiskit.providers.fake_provider import FakeHanoi
from qiskit.providers.fake_provider import FakeHanoi, FakeHanoiV2
from qiskit.pulse import (
ControlChannel,
DriveChannel,
Expand Down Expand Up @@ -109,6 +109,132 @@ def test_rzx_calibration_rotary_pulse_stretch(self, theta: float):

self.assertEqual(test_sched.duration, self.compute_stretch_duration(self.d1p_play, theta))

def test_native_cr_with_target(self):
"""Test that correct pulse sequence is generated for native CR pair."""
# Sufficiently large angle to avoid minimum duration, i.e. amplitude rescaling
theta = np.pi / 4

qc = circuit.QuantumCircuit(2)
qc.rzx(theta, 0, 1)

target = FakeHanoiV2().target

_pass = RZXCalibrationBuilder(target=target)
test_qc = PassManager(_pass).run(qc)

duration = self.compute_stretch_duration(self.u0p_play, theta)
with builder.build(
self.backend,
default_alignment="sequential",
default_transpiler_settings={"optimization_level": 0},
) as ref_sched:
with builder.align_left():
# Positive CRs
u0p_params = self.u0p_play.pulse.parameters
u0p_params["duration"] = duration
u0p_params["width"] = self.compute_stretch_width(self.u0p_play, theta)
builder.play(
GaussianSquare(**u0p_params),
ControlChannel(0),
)
d1p_params = self.d1p_play.pulse.parameters
d1p_params["duration"] = duration
d1p_params["width"] = self.compute_stretch_width(self.d1p_play, theta)
builder.play(
GaussianSquare(**d1p_params),
DriveChannel(1),
)
builder.x(0)
with builder.align_left():
# Negative CRs
u0m_params = self.u0m_play.pulse.parameters
u0m_params["duration"] = duration
u0m_params["width"] = self.compute_stretch_width(self.u0m_play, theta)
builder.play(
GaussianSquare(**u0m_params),
ControlChannel(0),
)
d1m_params = self.d1m_play.pulse.parameters
d1m_params["duration"] = duration
d1m_params["width"] = self.compute_stretch_width(self.d1m_play, theta)
builder.play(
GaussianSquare(**d1m_params),
DriveChannel(1),
)
builder.x(0)

self.assertEqual(schedule(test_qc, self.backend), target_qobj_transform(ref_sched))

def test_non_native_cr_with_target(self):
"""Test that correct pulse sequence is generated for non-native CR pair."""
# Sufficiently large angle to avoid minimum duration, i.e. amplitude rescaling
theta = np.pi / 4

qc = circuit.QuantumCircuit(2)
qc.rzx(theta, 1, 0)

target = FakeHanoiV2().target

_pass = RZXCalibrationBuilder(target=target)
test_qc = PassManager(_pass).run(qc)

duration = self.compute_stretch_duration(self.u0p_play, theta)
with builder.build(
self.backend,
default_alignment="sequential",
default_transpiler_settings={"optimization_level": 0},
) as ref_sched:
# Hadamard gates
builder.call_gate(RZGate(np.pi / 2), qubits=(0,))
builder.call_gate(SXGate(), qubits=(0,))
builder.call_gate(RZGate(np.pi / 2), qubits=(0,))
builder.call_gate(RZGate(np.pi / 2), qubits=(1,))
builder.call_gate(SXGate(), qubits=(1,))
builder.call_gate(RZGate(np.pi / 2), qubits=(1,))
with builder.align_left():
# Positive CRs
u0p_params = self.u0p_play.pulse.parameters
u0p_params["duration"] = duration
u0p_params["width"] = self.compute_stretch_width(self.u0p_play, theta)
builder.play(
GaussianSquare(**u0p_params),
ControlChannel(0),
)
d1p_params = self.d1p_play.pulse.parameters
d1p_params["duration"] = duration
d1p_params["width"] = self.compute_stretch_width(self.d1p_play, theta)
builder.play(
GaussianSquare(**d1p_params),
DriveChannel(1),
)
builder.x(0)
with builder.align_left():
# Negative CRs
u0m_params = self.u0m_play.pulse.parameters
u0m_params["duration"] = duration
u0m_params["width"] = self.compute_stretch_width(self.u0m_play, theta)
builder.play(
GaussianSquare(**u0m_params),
ControlChannel(0),
)
d1m_params = self.d1m_play.pulse.parameters
d1m_params["duration"] = duration
d1m_params["width"] = self.compute_stretch_width(self.d1m_play, theta)
builder.play(
GaussianSquare(**d1m_params),
DriveChannel(1),
)
builder.x(0)
# Hadamard gates
builder.call_gate(RZGate(np.pi / 2), qubits=(0,))
builder.call_gate(SXGate(), qubits=(0,))
builder.call_gate(RZGate(np.pi / 2), qubits=(0,))
builder.call_gate(RZGate(np.pi / 2), qubits=(1,))
builder.call_gate(SXGate(), qubits=(1,))
builder.call_gate(RZGate(np.pi / 2), qubits=(1,))

self.assertEqual(schedule(test_qc, self.backend), target_qobj_transform(ref_sched))

def test_native_cr(self):
"""Test that correct pulse sequence is generated for native CR pair."""
# Sufficiently large angle to avoid minimum duration, i.e. amplitude rescaling
Expand Down