Observation of electromagnetically induced absorption in a vee + ladder system

TL;DR

This paper reports the experimental observation of electromagnetically induced absorption in a combined vee + ladder atomic system using rubidium-87, supported by a theoretical model and analysis of control power effects.

Contribution

It presents the first experimental demonstration of EIA in a vee + ladder system with a theoretical model that matches the observations.

Findings

EIA observed in rubidium-87's low-lying energy levels

Theoretical model successfully reproduces experimental results

EIA characteristics depend on control power combinations

Abstract

We experimentally demonstrate electromagnetically induced absorption (EIA) in a vee + ladder system. The experiment is done using the low-lying energy levels of $^{87}$Rb. A theoretical model of the system is made that reproduces the experimental results. We study the dependence of the characteristics of the EIA resonance on various combinations of the different control powers. We also explore the contribution of various incoherent phenomena that affect the EIA signal.