  We consider the dynamics of a system consisting of two two-level atoms
interacting with the electromagnetic field near an optical black hole. We
obtain the reduced density operator of the two-atom system in the weak coupling
regime for the case that one atom is in the excited state and the other in the
ground state. The time evolution of the negativity between the atoms is
discussed for two non-resonance and resonance cases. In both cases, we show
that the two atoms can become entangled due to the indirect interaction
mediated through the optical black hole.
