Photon Wave-packet Manipulation via Dynamic Electromagnetically Induced Transparency in Multilayer Structures

TL;DR

This paper investigates how dynamic control of electromagnetically induced transparency (EIT) in multilayer structures can manipulate light wave packets, revealing interface effects and proposing practical modulation schemes for ultracold atomic systems.

Contribution

It introduces a Maxwell-Bloch framework for inhomogeneous multilayer EIT systems and explores dynamic modulation effects on light pulse shapes, including interface-induced phenomena.

Findings

Interface effects cause unique wave packet distortions.

Proposed modulation schemes are feasible with current ultracold atomic techniques.

Effective continuity equation describes pulse dynamics in layered EIT media.

Abstract

We present a Maxwell-Bloch description of the dynamics of a light pulse propagating through a spatially inhomogeneous system consisting of alternating layers of EIT media and vacuum. We study the effect of a dynamical modulation of the EIT control field on the shape of the wave packet: interesting effects due to the presence of interfaces with group velocity mismatch are found. An effective description based on a continuity equation is developed. Modulation schemes that can be realized in ultracold atomic samples with standard experimental techniques are proposed and discussed.