Coherent field-controlled rectification in one-dimension waveguide coupling to three-level atoms system

Abstract

We study the dynamics of the single-photon pulse (SPP) propagating through a pair of V-type three-level atoms coupled to a one-dimensional (1D) waveguide. The time evolutions of the two atoms can be influenced by the phase difference of the two external fields driving the atoms. We show that the SPP unidirectional propagation in the 1D waveguide can be controlled by the phase difference of the two external fields, and the rectifying efficiency increases as the bandwidth of the SPP decreases. The system can serve as the basis of all-optical devices, such as optical diode, optical isolator and optical rectifier.