A package implementing the quantum approximate optimisation algorithm (QAOA), providing a number of different features, parametrisations, and utility functions.

We assume that the user has already installed Rigetti's pyQuil package, as well as the Rigetti QVM and Quil Compiler. For instructions on how to do so, see the Rigetti documentation here: http://docs.rigetti.com/en/stable/start.html

Installation of the entropica_qaoa package can be performed in a few simple steps.

1. Open terminal and enter the site-packages folder of your preferred Python environment.

For those with Anaconda installed, the command looks like:

cd /anaconda3/envs/<my-env>/lib/pythonX.Y/site-packages/

For those unsure of the location of their site-packages folder, you can simply run 'pip show ' and your terminal will display the directory location of your python packages.

2. Clone the repository into your site-packages folder:

git clone https://github.com/entropicalabs/entropica_qaoa.git 

3. Move into the entropica_qaoa directory and install the package:

cd entropica_qaoa
python setup.py install

You can now import this package as you would any conda- or pip-installed library!

To ensure the package has been successfully installed, you can run the following commands:

• pytest runs the default tests and skips longer tests that need heavy simulations and tests of the Notebooks in examples/
• pytest --runslow the tests with heavy simulations.
• pytest --notebooks runs the Notebook tests. To achieve this, the notebooks are converted to python scripts which are then executed. So the line numbers in the error messages refer to the lines in <TheNotebook>.py and not in <TheNotebook>.ipynb.
• pytest --all runs all of the above tests. `
• If you need more info than pytest give you by default: Use the toggle pytest (options) -s to get all output.
• with pytest tests/<testfile> single tests can be run to check single modules.

NOTE: we are aware of a testing error with the test_qaoa.py file, related to the random number generator used there. This does not affect the smooth running of the code, and will be fixed soon.

The documentation can be installed and built by following these two steps:

Install the Prerequisites

pip install sphinx sphinx-rtd-theme sphinx-autodoc-typehints nbsphinx

Compile the documentation

cd docs && make html

This project is hosted on GitHub and can be found at https://github.com/entropicalabs/entropica_qaoa.git. If you have feature requests or have already implemented them, feel free to send us a pull request.