Time dependent thermal transport through a strongly correlated plexcitonic nanojunction

Abstract

We investigate the implications of the sinusoidal modulation of the higher energy level of a Coulomb blockaded quantum emitter, composed of two discrete energy levels under strong electron–phonon coupling and coupled to metallic nanoparticles possessing plasmon resonances, on the evolution of entropy current through the nanojunction by invoking the time dependent non-crossing approximation. The ensuing time dependent entropy current exhibits sinusoidal oscillations with the driving frequency. The amplitude of oscillations remains more or less constant in low bias regime but gets suppressed in high bias regime for fixed electron–phonon coupling. Boosting the electron–phonon coupling quenches the amplitude of oscillations in low bias regime. The amplitude of the oscillations increases upon reducing the driving frequency in low bias regime. We discuss these results with the aid of a microscopic model.