One- and two-photon scattering by two atoms in a waveguide
William Konyk, Julio R. Gea-Banacloche · Physical Review A · 2017
We consider the interaction of one- and two-photon pulses in a waveguide with two two-level systems (TLSs) that are also able to interact directly either through an exchange- or a dipole-type interaction. We focus on the system's transport properties and show how the presence of a second TLS increases the control options, especially when direct interactions are also allowed. We also obtain, within a Markov (long-pulse) approximation, exact results for the nonlinear or entangled terms that arise in the two-photon case and discuss both their potential applications and ways to minimize their effects.