  We analyze the generation of entanglement in a multipartite optical network.
We generalize the twin-field strategy to the multipartie case and show that our
protocol has advantageous rate-loss scalings of distributing W states and Dicke
states over the star networks. We give precise theoretical formulas and
quantitative performance analyses. Also analysis of the same protocol using
Gaussian states as resources, which is a typical setup of many experimental
tests, is provided.
