tergite 2025.9.0

The SDK in the Tergite software stack for connecting to the Swedish quantum computer

Tergite

The SDK in the Tergite software stack for connecting to the Swedish quantum computer.

It includes:

• Qiskit providers

This project is developed by a core group of collaborators. Chalmers Next Labs AB (CNL) takes on the role of managing and maintaining this project.

Version Control

The tergite stack is developed on a separate version control system and mirrored on Github. If you are reading this on GitHub, then you are looking at a mirror.

Installation

Install using pip

pip install tergite

Dependencies

• Python 3.12, 3.13
• Qiskit +v1.0
• Tergite Frontend

Provider Setup

• Ensure you have Python +3.12 installed.

• Create an account with QAL 9000 if you haven't already. (Or you can have your own tergite Frontend running)

• With the credentials received from Tergite, create and save a provider account by calling Tergite.use_provider_account(..., save=True).

from tergite import Tergite

provider = Tergite.use_provider_account(
    service_name="MY_SERVICE_NAME",
    url="https://api.qal9000.se",  # or the URL to your own tergite MSS,
    token="MY_API_TOKEN",
    save=True,
)

The code above stores your credentials in a configuration file called tergiterc, located in $HOME/.qiskit folder, $HOME being your home directory.

Once saved, you can retrieve this particular account using the SERVICE_NAME from anywhere in your code. From the provider, you can retrieve any backend you wish by name.

provider = Tergite.get_provider(service_name="MY_SERVICE_NAME")

# display list of backends
print(provider.backends())

# access the 'Loke' backend
backend = provider.get_backend("Loke")

Create a Throw-away Provider Account

• Alternatively, you can create a provider account that won't be saved. This is useful in things like automated tests. Just call the Tergite.use_provider_account(account) without the save option.

from tergite import Tergite

# the account from before
provider = Tergite.use_provider_account( 
    service_name="MY_SERVICE_NAME",
    url="https://api.qal9000.se",  # or the URL to your own tergite MSS
    token="MY_API_TOKEN",
)

• You can look at the examples folder for more samples.

Examples and demos

This project has a long history with contributions of many different partners. All files in the archive folder are scripts from live demonstrations, which show the historical progression of the project. Since research in quantum computing is moving fast, these files are meant to inspire and might not be functional with the source code of this library.

To find out how to use the library, please take a look into the notebooks and scripts inside the examples folder.

ToDo

• Add docs and doc generation
• Convert archives into examples, adding proper credits and timestamps

Contribution Guidelines

If you would like to contribute to tergite, please have a look at our contribution guidelines

Authors

This project is a work of many contributors.

Special credit goes to the authors of this project as seen in the CREDITS file.

ChangeLog

To view the changelog for each version, have a look at the CHANGELOG.md file.

License

Apache 2.0 License

Acknowledgements

This project was sponsored by:

• Knut and Alice Wallenberg Foundation under the Wallenberg Center for Quantum Technology (WACQT) project at Chalmers University of Technology
• Nordic e-Infrastructure Collaboration (NeIC) and NordForsk under the NordIQuEst project
• European Union's Horizon Europe under the OpenSuperQ project
• European Union's Horizon Europe under the OpenSuperQPlus project