Manipulating decay rates by entanglement and the Zeno effect
  We analyse a class of quantum dynamical processes which may lead to the hindering of the decay of a non-stationary state through appropriate entanglement with an additional two-level system. In this case the process can be considered as a module whose iteration is related to dynamical implementations of the so called quantum Zeno effect. 
A. F. R. de Toledo Piza and M. C. Nemes