This repository contains the code used to generate circuits, and collect sample statistics, used in the paper "Less Bacon More Threshold".

Sitting next to this README, at the root of the repository, are several scripts: step1_generate_circuits.sh, step2_collect_stats.sh step3_derive_fused_stats.sh and step4_plots.sh. Most plots from the paper can be reproduced by setting up a python environment and then running these scripts in order. You should tweak the collection script to customize the number of worker processes to match your machine. You may also want to reduce the max shots and max errors, since by default the collection script will take days to run on a 96 core machine.

Assuming a linux-like system with a working python installation, and a bit of luck, running the following bash code should in principle reproduce the results from the paper after running for a few days:

# Preparation: make virtual environment and install dependencies
python -m venv .venv
source .venv/bin/activate
sudo apt install parallel  # scripts use gnu-parallel to speed up circuit generation
pip install -r requirements.txt

./step1_generate_circuits.sh
./step2_collect_stats  # This one might take a week!
./step3_derive_fused_stats.sh
./step4_plot_stats

• .: top level of repository, with this README and the step# scripts
• ./tools: tools for performing tasks such as generating circuits and plots
• ./src: source root of the code; the directory to include in PYTHONPATH
• ./src/gen: generic code for generating and debugging quantum error correction circuits using stim
• ./src/baconshor: code for generating the bacon shor and fractal bacon shor circuits
• ./out: Scripts are configured to create this directory and write their output to various locations within it.