Correlation between lasing and transport properties in a quantum   dot-resonator system
  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. 
Pei-Qing Jin, Michael Marthaler, Jared H. Cole, Maximilian K\"opke,   J\"urgen Weis, Alexander Shnirman, Gerd Sch\"on
cond-mat.mes-hall