Two-photon scattering by a driven three-level emitter in a one-dimensional waveguide and electromagnetically induced transparency

TL;DR

This paper investigates how a driven three-level emitter in a one-dimensional waveguide affects two-photon transport, revealing enhanced correlations and electromagnetically induced transparency effects.

Contribution

It demonstrates the stronger two-photon correlations in a driven three-level system and analyzes the scaling and photon bunching phenomena under EIT conditions.

Findings

Two-photon correlation is stronger with a driven three-level emitter.

Electromagnetically induced transparency (EIT) occurs in the waveguide.

Transmitted photons tend to bunch together at two-photon resonance.

Abstract

We study correlated two-photon transport in a (quasi) one-dimensional photonic waveguide coupled to a three-level $\Lambda$-type emitter driven by a classical light field. Two-photon correlation is much stronger in the waveguide for a driven three-level emitter (3LE) than a two-level emitter. The driven 3LE waveguide shows electromagnetically induced transparency (EIT), and we investigate the scaling of EIT for one and two photons. We show that the two transmitted photons are bunched together at any distance separation when energy of the incident photons meets "two-photon resonance" criterion for EIT.