Creation of entangled states of distant atoms by interference
  We propose a scheme to create distant entangled atomic states. It is based on driving two (or more) atoms with a weak laser pulse, so that the probability that two atoms are excited is negligible. If the subsequent spontaneous emission is detected, the entangled state is created. We have developed a model to analyze the fidelity of the resulting state as a function of the dimensions and location of the detector, and the motional properties of the atoms. 
C. Cabrillo, J.I. Cirac, P. Garcia-Fernandez, P. Zoller