Reconfigurable Hexapartite Cluster States by Four-Wave Mixing Processes with a Spatially Structured Pump

The universal quantum computation provides a new paradigm for information processing. One feasible approach is measurement-based one-way quantum computation utilizing cluster states. Generally, the generation of cluster states with different structures for implementing on-demand quantum computation needs different experimental setup, which limits its scalability. Here, the reconfigurable hexapartite cluster states created by postprocessing the quadrature information of hexapartite entangled state are demonstrated. Without altering the experimental layout, nine quantum correlated states with different structures, especially three cluster states, are implemented. In particular, such method can effectively reduce the excess noise introduced by creating cluster states under limited squeezing resources. This approach provides an avenue for realizing large-scale reconfigurable cluster states without changing the experimental architecture.