How to use Qibocal?

In this section we present the different commands implemented in qibocal and how to use them.

qq

qq is the base command in qibocal. It can be launched from the command line using:

qq <path_to_runcard>

where <path_to_runcard> is the relative path to runcard, a yaml file containing all the instructions required to execute qq. The runcard layout is specified in the this section.

qq will create a folder, in the same directory where the command was executed, with a default name YYYY-MM-DD-xxx-username where xyz are three integers starting from 000 and username is the name of the user that is launching the job on the QRC cluster. If a folder with the same name already exists the program will try to create folder where the combination xyz is incremented by 1, until a new folder is created.

There is also the option to specify the name of the output folder through the -o option.

qq <path_to_runcard> -o <output_folder>

It is possible to overwrite an existing folder using the option -f.

Inside the folder generated by qq you will find the following

• platform.yml: a yaml containing the platform runcard used at the beginning of the calibration;

• new_platform.yml: a yaml containing the updated platform runcard after running the calibration routines specified in the runcard;

• runcard.yml: a copy of the runcard provided when executing qq;

• index.html: web page where reports are displayed;

• data: folder containing all the results divided by routines.

qq-live

qq-live is the command dedicated to live-plotting. It can be launched from the command line using:

qq-live

qq-live will start a flask server in local mode. By opening the correspoding web page you will see a list with all the folders generated by qq in the directory where qq-live is executed. If you select one of them you will see the page generated by qq.

If you are opening an output folder which is currently being generated by qq, you will see live-updates as the calibration routines is executed on the quantum computer.

You can directly select the port to serve the application using the -p option. For example in order to start the server on the port 8055 you can type.

qq-live -p 8055

It is possible to start the flask server in debug mode using the option -d.

The following picture shows an example of the generated web page:

qq-upload

Using qq-upload it is possible to upload the output folder generated by qq on this web page

qq-upload <output_folder>

In the web page it is possible to visualize all reports uploaded by other users.