[WIP] Integrate T1 experiment with result database

[yaelbh]

Summary

Using AnalysisResultV1 and ExperimentDataV1 from Qiskit/qiskit#5499

Details and comments

Incomplete, not working yet

[yaelbh]

Unlike our in-house ExperimentData, Qiskit/qiskit#5499 doesn't seem to support circuit level metadata. We can proceed in one of two ways:

1. Use the experiment metadata (which is supported by Experiment data and service Qiskit/qiskit#5499).
2. Make Experiment data and service Qiskit/qiskit#5499 support circuit metadata.

It appears that there was a plan to support circuit metadata in the ResultsDB (in addition to the experiment metadata), according to the ResultsDB design doc.

Which option is preferable?

[yaelbh]

I changed my clone of PR 5499 to pass the circuit metadata, but did not bother to filter by experiment type or id. This is how the relevant function looks like:

 def _add_result_data(self, result: Result) -> None:
        """Add data from a Result object

        Args:
            result: Result object containing data to be added.
        """
        for i in range(len(result.results)):
            data = result.data(i)
            data['metadata'] = result.results[i].header.metadata
            data['job_id'] = result.job_id
            if 'counts' in data:
                # Format to Counts object rather than hex dict
                data['counts'] = result.get_counts(i)
            self._add_single_data(data)

The difference is in the addition of the line starting with data['metadata'] = ...

[yaelbh]

I pushed some more code. It's still not working because need to figure out which index to put as an argument of Qubit. This will probably require to handle already now the story of parallel experiments.

[yaelbh]

Need to enter an index here inside the parentheses

[yaelbh]

Almost all T1 tests are passing now, with my own version of PR 5499, which I slightly modified to allow None backends. It remains to take care of parallel experiments.

[yaelbh]

Need to pass options (e.g. share_level) to the experiment data constructor, coming from the run method kwargs.

[yaelbh]

Closing in favor of #66