def test_measure_grouped_settings_read_checkpoint(tmpdir):
qubits = cirq.LineQubit.range(1)
(q,) = qubits
setting = cw.InitObsSetting(
init_state=cirq.KET_ZERO(q),
observable=cirq.Z(q),
)
grouped_settings = {setting: [setting]}
circuit = cirq.Circuit(cirq.I.on_each(*qubits))
with pytest.raises(ValueError, match=r'same filename.*'):
_ = cw.measure_grouped_settings(
circuit=circuit,
grouped_settings=grouped_settings,
sampler=cirq.Simulator(),
stopping_criteria=cw.RepetitionsStoppingCriteria(1_000, repetitions_per_chunk=500),
checkpoint=True,
checkpoint_fn=f'{tmpdir}/obs.json',
checkpoint_other_fn=f'{tmpdir}/obs.json', # Same filename
)
_ = cw.measure_grouped_settings(
circuit=circuit,
grouped_settings=grouped_settings,
sampler=cirq.Simulator(),
stopping_criteria=cw.RepetitionsStoppingCriteria(1_000, repetitions_per_chunk=500),
checkpoint=True,
checkpoint_fn=f'{tmpdir}/obs.json',
checkpoint_other_fn=f'{tmpdir}/obs.prev.json',
)
results = cirq.read_json(f'{tmpdir}/obs.json')
(result,) = results # one group
assert result.n_repetitions == 1_000
assert result.means() == [1.0]
def test_measure_grouped_settings_calibration_validation():
dummy_ro_calib = _MockBitstringAccumulator()
grouped_settings, qubits = _get_some_grouped_settings()
with pytest.raises(
ValueError, match=r'Readout calibration only works if `readout_symmetrization` is enabled'
):
cw.measure_grouped_settings(
circuit=cirq.Circuit(cirq.I.on_each(*qubits)),
grouped_settings=grouped_settings,
sampler=cirq.Simulator(),
stopping_criteria=cw.RepetitionsStoppingCriteria(10_000),
readout_calibrations=dummy_ro_calib,
readout_symmetrization=False, # no-no!
)
def test_measure_grouped_settings(with_circuit_sweep, checkpoint, tmpdir):
qubits = cirq.LineQubit.range(1)
(q, ) = qubits
tests = [
(cirq.KET_ZERO, cirq.Z, 1),
(cirq.KET_ONE, cirq.Z, -1),
(cirq.KET_PLUS, cirq.X, 1),
(cirq.KET_MINUS, cirq.X, -1),
(cirq.KET_IMAG, cirq.Y, 1),
(cirq.KET_MINUS_IMAG, cirq.Y, -1),
]
if with_circuit_sweep:
ss = cirq.Linspace('a', 0, 1, 12)
else:
ss = None
if checkpoint:
checkpoint_fn = f'{tmpdir}/obs.json'
else:
checkpoint_fn = None
for init, obs, coef in tests:
setting = cw.InitObsSetting(
init_state=init(q),
observable=obs(q),
)
grouped_settings = {setting: [setting]}
circuit = cirq.Circuit(cirq.I.on_each(*qubits))
results = cw.measure_grouped_settings(
circuit=circuit,
grouped_settings=grouped_settings,
sampler=cirq.Simulator(),
stopping_criteria=cw.RepetitionsStoppingCriteria(
1_000, repetitions_per_chunk=500),
circuit_sweep=ss,
checkpoint=CheckpointFileOptions(checkpoint=checkpoint,
checkpoint_fn=checkpoint_fn),
)
if with_circuit_sweep:
for result in results:
assert result.means() == [coef]
else:
(result, ) = results # one group
assert result.means() == [coef]
def test_measure_grouped_settings(with_circuit_sweep):
qubits = cirq.LineQubit.range(1)
(q, ) = qubits
tests = [
(cirq.KET_ZERO, cirq.Z, 1),
(cirq.KET_ONE, cirq.Z, -1),
(cirq.KET_PLUS, cirq.X, 1),
(cirq.KET_MINUS, cirq.X, -1),
(cirq.KET_IMAG, cirq.Y, 1),
(cirq.KET_MINUS_IMAG, cirq.Y, -1),
]
if with_circuit_sweep:
ss = cirq.Linspace('a', 0, 1, 12)
else:
ss = None
for init, obs, coef in tests:
setting = cw.InitObsSetting(
init_state=init(q),
observable=obs(q),
)
grouped_settings = {setting: [setting]}
circuit = cirq.Circuit(cirq.I.on_each(*qubits))
results = cw.measure_grouped_settings(
circuit=circuit,
grouped_settings=grouped_settings,
sampler=cirq.Simulator(),
desired_repetitions=1_000,
circuit_sweep=ss,
)
if with_circuit_sweep:
for result in results:
assert result.means() == [coef]
else:
(result, ) = results # one group
assert result.means() == [coef]