Starkshift experiment

[rodolfocarobene]

This should be an experiment to measure the AC starkshift so the qubit frequency shift with the cavity population (the readout power).

Reference: https://arxiv.org/pdf/cond-mat/0408367

Example runcard:

- id: stark
    operation: starkshift
    parameters:
        freq_width: 1_000_000
        freq_step: 10_000
        min_amp_factor: 0
        max_amp_factor: 1
        step_amp_factor: 0.05
        duration: 100
        amplitude: 0.5

Still to be tested and added to CI and documentation :-)

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[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.48%. Comparing base (b0dabce) to head (2d71699).

Additional details and impacted files

[](https://app.codecov.io/gh/qiboteam/qibocal/pull/900?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) ```diff @@ Coverage Diff @@ ## main #900 +/- ## ========================================== + Coverage 97.41% 97.48% +0.06% ========================================== Files 117 118 +1 Lines 8905 8979 +74 ========================================== + Hits 8675 8753 +78 + Misses 230 226 -4 ``` | [Flag](https://app.codecov.io/gh/qiboteam/qibocal/pull/900/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/qiboteam/qibocal/pull/900/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | `97.48% <100.00%> (+0.06%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/qiboteam/qibocal/pull/900?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam) | Coverage Δ | | |---|---|---| | [src/qibocal/protocols/\_\_init\_\_.py](https://app.codecov.io/gh/qiboteam/qibocal/pull/900?src=pr&el=tree&filepath=src%2Fqibocal%2Fprotocols%2F__init__.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam#diff-c3JjL3FpYm9jYWwvcHJvdG9jb2xzL19faW5pdF9fLnB5) | `100.00% <100.00%> (ø)` | | | [src/qibocal/protocols/stark\_shift.py](https://app.codecov.io/gh/qiboteam/qibocal/pull/900?src=pr&el=tree&filepath=src%2Fqibocal%2Fprotocols%2Fstark_shift.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam#diff-c3JjL3FpYm9jYWwvcHJvdG9jb2xzL3N0YXJrX3NoaWZ0LnB5) | `100.00% <100.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/qiboteam/qibocal/pull/900/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=qiboteam)

[rodolfocarobene]

Althought the experiment does seem correct, we were not able to see the starkshift with this experiment. We were able to do it with a continuous tone generated by another instrument and a VNA, it is possible (I think) that with pulses the same result cannot be reached...

For the moment, I'm closing this PR :-)