Improve Quantum Volume Fitter in Qiskit Ignis

[HuangJunye]

Abstract

Add new plotting features to QVFitter in Qiskit Ignis.

Description

As Quantum Volume becoming an industry standard, it's important to provide good Quantum Volume measurement and fitter code for all users to run QV measurement and plot their results. Existing code plots only one kind of figure. It would be good to add new features to plot different kinds of figures:

1. plot histogram of individual trial
2. plot accumulative heavy output probability as a function of number of trials.

Members

• @HuangJunye

Deliverable

Pull requests to Qiskit Ignis

• Improve plot_qv_data in QV Fitter qiskit-community/qiskit-ignis#495
• add quantum volume plotter for individual trials qiskit-community/qiskit-ignis#489
• Add QV plotter for plotting heavy output probability vs ntrials qiskit-community/qiskit-ignis#493

[HuangJunye]

So far I have been working on it alone and it's almost complete. It can serve as an example of Qiskit code project proposal.

[HuangJunye]

After the PR are merged, I will need to update the tutorial and textbook chapter to add the additional figures.

• Tutorial: https://qiskit.org/documentation/tutorials/noise/5_quantum_volume.html
• Textbook chapter: https://qiskit.org/textbook/ch-quantum-hardware/measuring-quantum-volume.html

In addition, QV measurement requires at least 100 trials, but current tutorial and textbook chapter uses 50 trials. We should fix that as well: https://github.com/qiskit-community/qiskit-textbook/issues/687

[starktech23]

There seems to be some pending or erroneous checks on the above PRs, but as soon as they get approved I can help update the doc and textbook. Count me in 👍

[HuangJunye]

Sure we can start working on the tutorials and textbook chapter and keep them on hold until the PRs are merged.