Scalable generation of continuous variable multipartite entangled states of light (Invited Paper)

Multipartite entanglement is a valuable resource in quantum information science, as it is at the center of applications such as distributed sensing and quantum computing. We present a scheme based on a parametric amplifier network for the generation of scalable multipartite continuous variable entangled states of light. We show that the symmetry of the configuration makes it possible to demonstrate its scalability to an arbitrary number of 2N entangled parties. To implement the proposed scheme in a compact and scalable configuration, we leverage the spatial multimode nature of four-wave mixing in Rb vapor. We present initial results that show the presence of quantum correlations between all expected mode pairs for quadripartite and octapartite quantum states.