Theory of an optomechanical quantum heat engine

TL;DR

This paper provides a detailed theoretical analysis and numerical simulation of a quantum heat engine based on optomechanical interactions, exploring its thermodynamic performance and efficiency in different quantum pictures.

Contribution

It develops a comprehensive theoretical framework and numerical model for an optomechanical quantum heat engine, extending previous work and analyzing its thermodynamics in detail.

Findings

Theoretical analysis of work and efficiency of the engine.

Investigation of quantum thermodynamics in polariton and photon-phonon pictures.

Numerical simulation of the full quantum evolution during the Otto cycle.

Abstract

Coherent interconversion between optical and mechanical excitations in an optomechanical cavity can be used to engineer a quantum heat engine. This heat engine is based on an Otto cycle between a cold photonic reservoir and a hot phononic reservoir [Phys. Rev. Lett. 112, 150602 (2014)]. Building on our previous work, we (i) develop a detailed theoretical analysis of the work and the efficiency of the engine, and (ii) perform an investigation of the quantum thermodynamics underlying this scheme. In particular, we analyze the thermodynamic performance in both the dressed polariton picture and the original bare photon and phonon picture. Finally, (iii) a numerical simulation is performed to derive the full evolution of the quantum optomechanical system during the Otto cycle, by taking into account all relevant sources of noise.