Strong Coupling Quantum Thermodynamics far away from Equilibrium: Non-Markovian Transient Quantum Heat and Work

TL;DR

This paper explores the non-Markovian transient quantum heat and work in a strongly coupled hybrid quantum system far from equilibrium, revealing significant effects of dissipation, fluctuation, and external driving.

Contribution

It applies a recent renormalization theory to analyze non-Markovian effects in transient quantum thermodynamics of a hybrid system with strong coupling.

Findings

Transient quantum heat current involves non-Markovian effects

Quantum work power is influenced by non-Markovian feedback

External driving induces non-Markovian energy renormalization

Abstract

In this paper, we investigate the strong coupling quantum thermodynamics of the hybrid quantum system far away from equilibrium. The strong coupling hybrid system consists of a cavity and a spin ensemble of the NV centers in diamond under external driving that has been realized experimentally. We apply the renormalization theory of quantum thermodynamics we developed recently to study the transient quantum heat and work in this hybrid system. We find that the dissipation and fluctuation dynamics of the system induce the transient quantum heat current which involve the significant non-Markovian effects. On the other hand, the energy renormalization and the external driving induce the quantum work power. The driving-induced work power also manifests non-Markovian effects due to the feedback of non-Markovian dynamics of the cavity due to its strong coupling with the spin ensemble.