Storage by trapping and spatial staggering of multiple interacting solitons in $\Lambda$-type media

TL;DR

This paper explores how SIT solitons in a $\Lambda$-type medium can be trapped, manipulated, and used for optical logic operations through their interactions and phase control.

Contribution

It introduces methods for trapping SIT solitons, controlling their phases, and implementing an optical XOR gate using phase manipulation in $\Lambda$-type media.

Findings

SIT solitons can be trapped with phase preservation in the ground state coherence.

Application of light fields can systematically alter soliton phases.

SIT solitons can be used to implement optical XOR gates.

Abstract

In this paper we investigate the properties of self induced transparency (SIT) solitons, propagating in a $\Lambda$-type medium. It was found that the interaction between SIT solitons can lead to trapping with their phase preserved in the ground state coherence of the medium. These phases can be altered in a systematic way by the application of appropriate light fields, such as additional SIT solitons. Furthermore, multiple independent SIT solitons can be made to propagate as bi-solitons through their mutual interaction with a separate light field. Finally, we demonstrate that control of the SIT soliton phase can be used to implement an optical exclusive-or gate.