Irreversible decay of nonlocal entanglement via a reservoir of a single degree of freedom
Alessandro Vaglica, G. Vetri · Physical Review A · 2007
Recently, it has been realized that nonlocal disentanglement may take a finite time as opposite to the asymptotic decay of local coherences. We find in this paper that a sudden irreversible death of entanglement takes place in a two atom optical Stern-Gerlach model. In particular, the one degree nondissipative environment here considered suddenly destroys the initial entanglement of any Bell's states $\ensuremath{\mid}{\ensuremath{\phi}}^{\ifmmode\pm\else\textpm\fi{}}⟩$ superposition.