Gain-assisted quantum heat engine based on electromagnetically induced transparency

TL;DR

This paper proposes a quantum heat engine utilizing electromagnetically induced transparency and gain without inversion, leveraging spontaneously generated coherence to enhance emission and spectral brightness.

Contribution

It introduces a novel gain-assisted quantum heat engine scheme based on a three-level atomic system with SGC, advancing quantum thermodynamics and quantum optics.

Findings

Enhanced emission cross-section due to SGC

Increased spectral brightness of the QHE

Effective realization of gain-assisted quantum heat engine

Abstract

We present a scheme to realize a gain-assisted quantum heat engine (QHE) based on electromagnetically induced transparency (EIT). The QHE consists of a three-level { \Lambda}-type atomic system that interacts with two thermal reservoirs and a coupling field. The gain without inversion is induced in the system via spontaneously generated coherence (SGC) between two lower levels. The SGC has a significant effect on the system's dynamics, resulting in an enhancement of the emission cross-section and spectral brightness of the QHE.