Updates in Cross Resonance calibration routines

[jevillegasdatTII]

Follow up on #821 and PR #860

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.
• Compatibility with Qibo modules (Please edit this section if the current pull request is not compatible with the following branches).
  • Qibo: master
  • Qibolab: main
  • Qibolab_platforms_qrc: main

[codecov]

Codecov Report

Attention: Patch coverage is 54.43548% with 113 lines in your changes missing coverage. Please review.

Project coverage is 96.02%. Comparing base (7a7c18e) to head (42a161c).
Report is 672 commits behind head on cross_resonance.

Files with missing lines	Patch %	Lines
...t_interaction/cross_resonance/chevron_frequency.py	49.45%	46 Missing ⚠️
...ction/cross_resonance/cross_resonance_sequences.py	39.13%	42 Missing ⚠️
...ols/two_qubit_interaction/cross_resonance/utils.py	0.00%	25 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                 @@
##           cross_resonance     #987      +/-   ##
===================================================
- Coverage            97.30%   96.02%   -1.28%     
===================================================
  Files                  112      115       +3     
  Lines                 8194     8402     +208     
===================================================
+ Hits                  7973     8068      +95     
- Misses                 221      334     +113     

Flag	Coverage Δ
unittests	96.02% <54.43%> (-1.28%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/qibocal/protocols/__init__.py	100.00% <100.00%> (ø)
...ibocal/protocols/two_qubit_interaction/__init__.py	100.00% <100.00%> (ø)
...protocols/two_qubit_interaction/chevron/chevron.py	96.87% <ø> (ø)
.../two_qubit_interaction/cross_resonance/__init__.py	100.00% <100.00%> (ø)
...s/two_qubit_interaction/cross_resonance/chevron.py	100.00% <100.00%> (ø)
...bit_interaction/cross_resonance/cross_resonance.py	100.00% <100.00%> (ø)
...ols/two_qubit_interaction/cross_resonance/utils.py	0.00% <0.00%> (ø)
...ction/cross_resonance/cross_resonance_sequences.py	39.13% <39.13%> (ø)
...t_interaction/cross_resonance/chevron_frequency.py	49.45% <49.45%> (ø)

[jevillegasdatTII]

In none of the routines using sweepers, the readout pulse is swept at the same as the CR drive pulse duration, similar to what was discussed in #qiboab/919. I'm not sure how can I do this correctly, but since the typical tests I was running re ~400 ns, this wasn't a problem yet.

[alecandido]

@jevillegasdatTII there is an ongoing PR, qiboteam/qibolab#993, realized by @hay-k, which is restoring some expected Qblox behavior on top of a Qibolab version compatible with the current Qibocal.

Did you try the corresponding branch https://github.com/qiboteam/qibolab/tree/qblox-ad-hoc-features?

[jevillegasdatTII]

I've tested the branch against qiboteam/qibolab@898fa86 and the routines are working well. I found an error though in one routine so I have to cancel the pull request and make it again. No fitting has been implemented in any of the calibration routines.

Here are some of the results from today on QPU88 (qiboteam/qibolab_platforms_qrc@4ec5243):

Cross Resonance

  - id: cross resonance sequences
    operation: cross_resonance_sequences
    targets: [[0,1]]
    parameters:
      pulse_duration_start:  4
      pulse_duration_end: 800
      pulse_duration_step: 2
      pulse_amplitude: 1.0
      nshots: 4000

Cross Resonance Sequences

  - id: cross resonance sequences
    operation: cross_resonance_sequences
    targets: [[0,1]]
    parameters:
      pulse_duration_start:  4
      pulse_duration_end: 800
      pulse_duration_step: 2
      pulse_amplitude: 1.0
      nshots: 4000

Chevron

  - id: cr chevron
    operation: cross_resonance_chevron
    targets: [[0,1]]
    parameters:
      pulse_duration_start: 4
      pulse_duration_end: 400
      pulse_duration_step: 10
      amplitude_min_factor: 0.01
      amplitude_max_factor: 1.0
      amplitude_step_factor: 0.01
      pulse_amplitude: 1.0
      nshots: 200

Chevron Frequency

- id: cr chevron frequency
    operation: cross_resonance_chevron_frequency
    targets: [[0,1]]
    parameters:
      pulse_duration_start: 4
      pulse_duration_end: 400
      pulse_duration_step: 10
      freq_width: 50_000_000
      freq_step:   1_000_000
      pulse_amplitude: 1.0
      nshots: 200