Correlation between lasing and transport properties in a quantum dot-resonator system

TL;DR

This paper investigates a double quantum dot system coupled to a resonator, demonstrating how biasing can induce lasing states that correlate with transport current, enabling high-resolution measurements.

Contribution

It introduces a method to probe lasing states through transport current in a quantum dot-resonator system, highlighting potential for high-precision applications.

Findings

Lasing state exists within a narrow resonance window.

Transport current correlates with the lasing state.

Potential for high-resolution measurement applications.

Abstract

We study a double quantum dot system coherently coupled to an electromagnetic resonator. By suitably biasing the system, a population inversion can be created between the dot levels. The resulting lasing state exists within a narrow resonance window, where the transport current correlates with the lasing state. It allows probing the lasing state via a current measurement. Moreover, the resulting narrow current peak opens perspective for applications of the setup for high resolution measurements.