Quasi-deterministic generation of entangled atoms in a cavity
  We present a scheme to generate a maximally entangled state of two three-level atoms in a cavity. The success or failure of the generation of the desired entangled state can be determined by detecting the polarization of the photon leaking out of the cavity. With the use of an automatic feedback, the success probability of the scheme can be made to approach unity. 
Jongcheol Hong and Hai-Woong Lee