All-optical control of thermal conduction in waveguide QED

TL;DR

This paper demonstrates how laser-driven atoms can be used to control and amplify heat conduction between waveguides, enabling asymmetric heat flow and potential heat engine applications.

Contribution

It introduces a novel all-optical method to manipulate thermal conduction in waveguide QED systems using laser driving, achieving tunable asymmetric heat flow.

Findings

Asymmetric heat conduction can be achieved and controlled by laser parameters.

Heat currents can be significantly amplified via laser energy flow.

The scheme can function as a heat engine.

Abstract

We investigate the heat conduction between two one-dimension waveguides intermediated by a Laser-driving atom. The Laser provides the optical control on the heat conduction. The tunable asymmetric conduction of the heat against the temperature gradient is realized. Assisted by the modulated Laser, the heat conduction from either waveguide to the other waveguide can be suppressed. Meanwhile, the conduction towards the direction opposite to the suppressed one is gained. The heat currents can be significantly amplified by the energy flow of the Laser. Moveover, the scheme can act like a heat engine.