Propagation of a Single Photon in a 1-D Waveguide Coupled to a V-Type Atom

Abstract

The area of waveguide quantum electrodynamics plays a signi cant role in many quantum technology applications. Photonic waveguides can be used to coherently transport photon pulses and can also efficiently increase the light-matter interaction strength. The work is done by Shen and Fan [1, 2] on the propagation of a photon pulse in a 1-D waveguide coupled to a single two-level emitter shows that a photon pulse can undergo complete reflection or transmission through the waveguide by controlling the coupling strength between the atom and the guided photon. We propose a V-type atomic system embedded in a 1-D waveguide and study the properties of an incoming photon pulse in the waveguide. We show that the driving field, which couples one of the atomic transitions, can be used as a controlling parameter to allow the photon pulse to be reflected or transmitted through the waveguide. As there reflection and transmission of the incident photon pulse can be externally controlled in our system, in comparison to the system suggested by Shen and Fan [1, 2], the proposed system in this thesis is more practiced than the system [1, 2]