Qubit power spectroscopy experiment

[rodolfocarobene]

Hi! I'm trying to add some new experiment, at the moment I do not have available qubits. Are there qubits at TII that I could use?

Anyway, this PR implements a qubit spectroscopy where also the amplitude of the pulse is changed. We performed the experiment with qibolab some weeks ago, finding the following plot:

For the moment I did not try to add any fitting procedure (nothing comes to my mind).

For now I've tested it with:

platform: dummy
targets: [0, 1, 2]

actions:
  - id: boh
    operation: qubit_power_spectroscopy
    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

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 97.25%. Comparing base (3ee8864) to head (d30a953).

Additional details and impacted files

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[andrea-pasquale]

Thanks @rodolfocarobene for opening the PR. I will have a look.

Are there qubits at TII that I could use? Qubit 0 and 2 in qw5q_platinum are available (3 needs recalibration) in this branch.

[rodolfocarobene]

Thanks for the review! I will try some tests in the next days :-)

[andrea-pasquale]

Here are some results on TII chips: http://login.qrccluster.com:9000/cvKBqpy7RueE0vqH1KlJtA==/ The scan is quite short so I was able to see only the first transition.

EDIT: wider scan http://login.qrccluster.com:9000/DN--X7stT5ibukPBoDlI5w==/

[rodolfocarobene]

Sorry @andrea-pasquale , could you send a picture of one of the scan? For some reason I cannot connect to the cluster right now

[andrea-pasquale]

[rodolfocarobene]

Thank you! It seems to be working fine, but maybe I would remove the normalization part (in the plotting). In this way it should be possible also to compare the depth of the different deeps

[rodolfocarobene]

I can confirm this works as expected!