The Two Level Atom System Dissipation Influence to Single Photon Propagating Properties

Abstract

The studies of interactions of electromagnetic fields with two level atom systems is a main theme of quantum optics. Here, we shows how the inherent dissipation of atom influences the interaction between atom and single photon propagating in the waveguide. Based on a fully quantum mechanical theory in real space, we exactly calculated the transportation probability of a single photon for a two-level atom system next to the waveguide. We find that the existence of a dissipated atom can be utilized to act as the light router as well as the beam splitter, if properly adjust relationship of atom dissipation 􀟛􀯤and coupling strengthV between atom and single photon in waveguide.