# High efficiency Four-Wave Mixing in a five-level atomic System based on the two electromagnetically induced transparency

## TL;DR

This paper proposes a five-level atomic system scheme utilizing two electromagnetically induced transparencies to achieve high-efficiency four-wave mixing, significantly surpassing previous methods and enabling advanced quantum and spectroscopic applications.

## Contribution

The paper introduces a novel five-level atomic configuration that greatly enhances four-wave mixing efficiency using two EIT effects, advancing quantum optics techniques.

## Key findings

- Maximum FWM efficiency nearly 30%
- Efficiency is orders of magnitude higher than previous schemes
- Potential applications in low-light nonlinear spectroscopy and quantum information

## Abstract

We have analyzed a five-level $\wedge$-configuration Four-Wave Mixing (FWM) scheme for obtaining a high-efficiency FWM based on the two electromagnetically induced transparency. We find that the maximum FWM efficiency is nearly 30%, which is orders of magnitude larger than previous schemes based on the two electromagnetically induced transparency. Our scheme may provide a new possibility for technological applications such as nonlinear spectroscopy at very low light intensity, quantum single-photon nonlinear optics and quantum information science.