Distillation of Entanglement between Distant Systems by Repeated   Measurements on Entanglement Mediator
  A recently proposed purification method, in which the Zeno-like measurements of a subsystem can bring about a distillation of another subsystem in interaction with the former, is utilized to yield entangled states between distant systems. It is shown that the measurements of a two-level system locally interacting with other two spatially separated not coupled subsystems, can distill entangled states from the latter irrespectively of the initial states of the two subsystems. 
G. Compagno, A. Messina, H. Nakazato, A. Napoli, M. Unoki, K. Yuasa