Bipartite and Tripartite Entanglement of Truncated Harmonic Oscillator   Coherent States via Beam Splitters
  We introduce a special class of truncated Weyl-Heisenberg algebra and discuss the corresponding Hilbertian and analytical representations. Subsequently, we study the effect of a quantum network of beam splitting on coherent states of this nonlinear class of harmonic oscillators. We particularly focus on quantum networks involving one and two beam splitters and examine the degree of bipartite as well as tripartite entanglement using the linear entropy. 
M. Daoud, A. Jellal, E. B. Choubabi and E. H. El Kinani
quant-ph