Abstract
An experimental scheme is suggested that permits a direct measure of entanglement in a two-qubit cavity system. It is realized in the cavity-QED technology utilizing atoms as flying qubits. With this scheme we generate two different measures of entanglement. namely logarithmic negativity and concurrence The phenomenon of sudden death entanglement (ESD) in a bipartite system subjected to dissipative environment is examined We show that the sudden death time of the entangled states depends on the initial preparation of the entangled state and the temperature of the reservoir. (C) 2010 Elsevier B V All rights reserved