Bipartite entanglement of multipartite coherent states using quantum   network of beam splitters
  We investigate the generation of multipartite entangled SU(k+1) coherent states using a quantum network involving a sequence of k beam splitters. We particularly investigate the entanglement in multipartite SU(2) coherent states (k = 1). We employ the concurrence as measure of the degree of bipartite entanglement. 
M. Daoud and E. B. Choubabi
quant-ph