Squeezing and entanglement of atomic beams
  We propose and analyze a scheme for generating entangled atomic beams out of a Bose-Einstein condensate using spin-exchanging collisions. In particular, we show how to create both atomic squeezed states and entangled states of pairs of atoms. 
L.-M. Duan, A. S{\o}rensen, J. I. Cirac, and P. Zoller