Figure 9
From: Multipartite state generation in quantum networks with optimal scaling
(a) One can create a cluster state from a grid of Bell-pairs by merging them (orange rectangles). The numbers indicate how many qubits need to be stored at each of the stations. (b) Optimizing the storage required at the stations by using multipartite states: For the red qubits (GHZ-states) and the green qubits (2 colorable graph state) the entanglement distillation protocol for two colorable graph states are employed. The red numbers indicate where we have reduced the number of qubits which need to be stored at the station.
