NV center qubits
In the video, Tim explains that NV centers are promising candidates as nodes in a quantum network, if only because of the relatively straightforward (optical) way we can connect the electron spins between two nodes. Tim also explains the nuclear spins around such an NV center. What do you think can be the primary purpose for those nuclear spins in such a quantum network?
The nuclear spins are the data qubits used to perform the actual computations in the nodes of the network.