Non-Local Games

Code for Variational Methods for Computing Non-Local Quantum Strategies (arXiv).

Examples

The examples/ folder contains different scripts that use the nonlocal games library.

• dpo/: Script for executing multiple trials of DPO on the NPS game in parallel
• g14/: Program that runs multiple trials of DPO on G14 in parallel
• g14_on_ibm/: Dispatches a strategy for G14 onto multiple IBM quantum devices. See this if you're interested in loading the G14 circuit. Also contains examples for zero-noise extrapolation (ZNE), but this is not in the paper.

Data

Look at data/metadata.md for details.

Installation

You can install this package with $ pip install .

This package depends on a custom implementation of ADAPT-VQE called adaptgym that's tailored to another project (currently private code). You can find an implementation of ADAPT here or roll your own. When you see code like

env = AdaptGame(...)
env.reset()
while not done:
    env.step(0)

this is equivalent to running ADAPT, with each step() call corresponding to adding the operator with the highest gradient.

Testing

This package has a few tests that rely on the pytest framework. You can run them with $ pytest.