  The quantum technology revolution brings with it the promise of a quantum
internet. A new -- quantum -- network stack will be needed to account for the
fundamentally new properties of quantum entanglement. The first realisations of
quantum networks are imminent and research interest in quantum network
protocols has started growing. In the non-quantum world, programmable data
planes have broken the pattern of ossification of the protocol stack and
enabled a new -- software-defined -- network software architecture. Similarly,
a programmable quantum data plane could pave the way for a software-defined
quantum network architecture. In this paper, we demonstrate how we use
P4$_{16}$ to explore abstractions and device architectures for quantum
networks.
