Comparison of EIT schemes in semiconductor quantum dot structures: Impact of many-body interactions

TL;DR

This study compares three EIT schemes in semiconductor quantum dots, revealing that many-body interactions significantly influence slow light effects and can reduce required coupling power, with V schemes being most advantageous.

Contribution

It provides a comparative analysis of EIT schemes in quantum dots, highlighting the impact of many-body interactions on slow light and identifying the V scheme as most favorable.

Findings

Many-body interactions significantly affect slow light properties.

Many-body interactions reduce the coupling power needed for EIT.

V schemes are generally preferable due to carrier redistribution.

Abstract

We investigate the impact of many-body interactions on group-velocity slowdown achieved via electromagnetically induced transparency in quantum dots using three different coupling-probe schemes (ladder, V, and Lambda, respectively). We find that for all schemes many-body interactions have an important impact on the slow light properties. In the case of the Lambda and V schemes, the minimum required coupling power to achieve slow light is significantly reduced by many-body interactions. V type schemes are found to be generally preferable due to a favorable redistribution of carriers in energy space.