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Long t1 #1366

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566bdab
split delays for long t1
jevillegasd Feb 5, 2026
05f64ec
lonmg t1 for t1 (classified)
jevillegasd Feb 5, 2026
da9edae
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Feb 5, 2026
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5 changes: 3 additions & 2 deletions src/qibocal/protocols/coherence/t1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,10 +48,11 @@ def _acquisition(
params: T1Parameters, platform: CalibrationPlatform, targets: list[QubitId]
) -> T1Data:
"""Data acquisition for T1 experiment."""

num_delays = int(params.delay_before_readout_end // 65004) + 1

@jevillegasd jevillegasd Feb 5, 2026

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Is the maximum size stored somewhere in the driver object, maybe we can read from there instead of hard coding it here.

sequence, ro_pulses, pulses = t1_sequence(
platform=platform,
targets=targets,
num_delays=num_delays,
)

ro_wait_range = np.arange(
Expand All @@ -62,7 +63,7 @@ def _acquisition(

sweeper = Sweeper(
parameter=Parameter.duration,
values=ro_wait_range,
values=ro_wait_range // num_delays,
pulses=pulses,
)

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13 changes: 8 additions & 5 deletions src/qibocal/protocols/coherence/t1_signal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,11 +77,13 @@ def t1_sequence(
platform: CalibrationPlatform,
targets: list[QubitId],
flux_pulse_amplitude: Optional[float] = None,
num_delays: int = 1,
):
"""Create sequence for T1 experiment with a given optional delay."""
sequence = PulseSequence()
ro_pulses = {}
delays = len(targets) * [Delay(duration=0)]

delays = num_delays * len(targets) * [Delay(duration=0)]
for i, q in enumerate(targets):
natives = platform.natives.single_qubit[q]
qd_channel, qd_pulse = natives.RX()[0]
Expand All @@ -101,7 +103,8 @@ def t1_sequence(
sequence.append((flux_channel, flux_pulses[i]))
else:
flux_pulses = []
sequence.append((ro_channel, delays[i]))
for j in range(num_delays):
sequence.append((ro_channel, delays[i * num_delays + j]))
sequence.append((ro_channel, ro_pulse))

return sequence, ro_pulses, delays + flux_pulses
Expand All @@ -113,8 +116,8 @@ def _acquisition(
"""Data acquisition for T1 experiment.

In this protocol the y axis is the magnitude of signal in the IQ plane."""

sequence, ro_pulses, pulses = t1_sequence(platform, targets)
num_delays = int(params.delay_before_readout_end // 65004) + 1
sequence, ro_pulses, pulses = t1_sequence(platform, targets, num_delays=num_delays)

ro_wait_range = np.arange(
params.delay_before_readout_start,
Expand All @@ -124,7 +127,7 @@ def _acquisition(

sweeper = Sweeper(
parameter=Parameter.duration,
values=ro_wait_range,
values=ro_wait_range // num_delays,
pulses=pulses,
)

Expand Down