# Quantum Entanglement Multi-Laboratory Study 

## Non-local Correlations in Entangled Photon Pairs: A Multi-Laboratory Study of Bell Inequality Violations

This repository contains all data, analysis code, and manuscript materials for a collaborative study of Bell inequality violations across 34 quantum optics laboratories in 32 countries.

### Project Structure

```
qu-en/
├── data/
│   ├── raw/              # Raw experimental data from participating labs
│   └── base/             # Processed data files
├── notebooks/            # Jupyter notebooks for analysis and visualization
│   ├── make_basedata.ipynb          # Data processing pipeline
│   ├── plot_*.ipynb                 # Visualization notebooks
│   ├── tab_*.ipynb                  # Table generation notebooks
│   └── utils.py                     # Utility functions
├── output/
│   ├── plots/            # Generated figures
│   ├── tables/           # Generated LaTeX tables
│   └── manuscript.pdf    # Final compiled manuscript
├── report/
│   └── manuscript.tex    # LaTeX manuscript source
├── Makefile              # Build automation
└── README.md
```

### Building the Manuscript

The entire analysis pipeline and manuscript can be built with a single command:

```bash
make
```

This will:
1. Process raw experimental data
2. Generate all plots and tables
3. Compile the LaTeX manuscript to PDF

### Requirements

- Python 3.7+ with packages:
  - pandas
  - numpy
  - matplotlib
  - pyprojroot
  - papermill
  - jupyter
- LaTeX distribution (e.g., TeXLive, MikTeX)
- Make

### Data

The `data/raw/experimental_data.csv` file contains measurements from 35 participating laboratories (34 after quality control). Each row represents one experiment with the following key variables:

- Bell Parameter (S)
- Entanglement Fidelity
- Visibility
- Detector specifications
- Environmental conditions
- And more...

### Reproducibility

All analysis is fully reproducible. The Makefile ensures correct execution order and dependency tracking. To rebuild from scratch:

```bash
make clean
make
```

### License

Research data and code are provided for academic use. Please cite the accompanying publication if you use this data.

### Contact

For questions about the data or analysis, please contact the International Quantum Entanglement Consortium.