Many particle entanglement in two-component Bose-Einstein Condensates
  We investigate schemes to dynamically create many particle entangled states of a two component Bose-Einstein condensate in a very short time proportional to 1/N where $N$ is the number of condensate particles. For small $N$ we compare exact numerical calculations with analytical semiclassical estimates and find very good agreement for $N \geq 50$. We also estimate the effect of decoherence on our scheme, study possible scenarios for measuring the entangled states, and investigate experimental imperfections. 
A. Micheli (1), D. Jaksch (1), J. I. Cirac (1 and 2), and P. Zoller   (1) ((1) Institut f\"ur Theoretische Physik, Universit...