Seminar: Tom Stace

Correlated decay in driven quantum systems

Tom Stace, University of Queensland, Australia

Gate defined quantum dots are "artificial atoms", with well defined energy levels. They interact strongly with microwave resonators, and with the solid-state environment in which they live. These systems can exhibit population inversion, single-atom masing and other phenomena familiar to the quantum optics community. The environment also produces higher-order correlated decay processes, which are typically not included in quantum-optical Lindblad master equations. I will describe how we systematically derive such correlated decay terms using Keldysh diagrammatic perturbation theory, leading to higher-order Lindblad master equations. These new terms are very general, and account for discrepancies between current theory and experiment.