Quantum interference and evolution of entanglement in a system of   three-level atoms
  We consider a pair of three-level atoms interacting with the vacuum. The process of disentanglement due to spontaneous emission and the role of quantum interference between principal transitions in this process, are analysed. We show that the presence of interference can slow down disentanglement. In the limit of maximal interference, some part of initial entanglement can survive. 
L. Derkacz, L. Jakobczyk