Slow-light dissipative solitons in an atomic medium assisted by an incoherent pumping field

TL;DR

This paper investigates the propagation of optical pulses in a 4-level atomic medium under electromagnetically induced transparency, demonstrating controllable linear and nonlinear properties, and exploring stable dissipative solitons through analytical and computational methods.

Contribution

It introduces a model for dissipative solitons in an atomic medium with external control via a continuous-wave laser and incoherent pump, highlighting new experimental possibilities.

Findings

External control of optical properties via laser and pump fields

Existence of stable dissipative solitons in the system

Validation of analytical results with numerical simulations

Abstract

This work models the propagation of an optical pulse in a 4-level atomic system in the electromagnetic induced transparency regime. By demonstrating that linear and nonlinear optical properties can be externally controlled and tailored by a continuous-wave control laser beam and an assisting incoherent pump field, it is shown how these media can provide an excellent framework to experimentally explore pulse dynamics in the presence of non-conservative terms, either gain or loss. Furthermore, we explore the existence of stable dissipative soliton solutions, testing the analytical results with computational simulations of both the effective (1+1)-dimensional model and the full Maxwell-Bloch system of equations.