# Backend

The `pqn-stack` repository contains the Python backend for PQN nodes. It manages quantum hardware, implements experiment protocols, and exposes a FastAPI server for the frontend and inter-node communication.

**Repository**: [github.com/PublicQuantumNetwork/pqn-stack](https://github.com/PublicQuantumNetwork/pqn-stack)

```{toctree}
:maxdepth: 2

installation
configuration
architecture
running
protocols
```