Effects of cavity–cavity interaction on the entanglement dynamics of a generalized double Jaynes–Cummings model
Mahasweta Pandit, Sreetama Das, Sudipto Singha Roy +2 more
Abstract We consider a generalized double Jaynes–Cummings model consisting of two isolated two-level atoms, each contained in a lossless cavity that interact with each other through a controlled photon-hopping mechanism. We analytically show that at low values of such a mediated cavity–cavity interaction, the temporal evolution of entanglement between the atoms, under the effects of cavity perturbation, exhibits the well-known phenomenon of entanglement sudden death (ESD). Interestingly, for moderately large interaction values, a complete preclusion of ESD is achieved, irrespective of its value in the initial atomic state. Our results provide a model to sustain entanglement between two atomic qubits, under the adverse effect of cavity induced perturbation, by introducing a non-intrusive inter-cavity photon exchange that can be physically realized through cavity-QED setups in contemporary experiments.
arXiv:1612.01165•Journal of Physics B Atomic Molecular and Optical Physics•Dec 19, 2017•17 citations