Lasing and transport in a coupled quantum dot-resonator system

TL;DR

This paper studies a double quantum dot system coupled to a resonator, demonstrating lasing behavior driven by current-induced population inversion and analyzing how dissipation affects transport and lasing properties.

Contribution

It introduces a detailed analysis of lasing and transport in a coupled quantum dot-resonator system, highlighting the effects of dissipation and the resonance condition.

Findings

Lasing occurs within a sharp resonance window driven by current-induced population inversion.

Transport current correlates with the lasing state, enabling potential sensing applications.

Dissipative processes significantly influence the lasing and transport behavior.

Abstract

We investigate a double quantum dot coupled to a transmission line resonator. By driving a current through the double dot, a population inversion between the dot levels can be created, and a lasing state of the radiation field is generated within a sharp resonance window. The transport current correlates with the lasing state. The sharp resonance condition allows for resolving small differences in the dot properties. Dissipative processes in the quantum dots and their effect on the lasing and transport behavior are investigated.