Robust Entanglement in Atomic Systems via Lambda-Type Processes

Ozgur Cakir, M. Ali Can, Alexander Klyachko, Alexander Shumovsky

Published 2002-11-25Version 1

It is shown that the system of two three-level atoms in $\Lambda$ configuration in a cavity can evolve to a long-lived maximum entangled state if the Stokes photons vanish from the cavity by means of either leakage or damping. The difference in evolution picture corresponding to the general model and effective model with two-photon process in two-level system is discussed.