Thermophonon flux in double-cavity optomechanics

Yu Wu, Wenjie Nie, Guoyao Li, Aixi Chen, and Yueheng Lan
Phys. Rev. A 103, 043521 – Published 29 April 2021

Abstract

We propose theoretically an optomechanical system with double cavities to explore the thermophonon transport from the thermal bath of the mechanical oscillator to the coupled system. We find that the direction and magnitude of thermophonon flux in the system can be controlled flexibly by coupling an active cavity with gain to the driven cavity. In particular, the injected squeezing vacuum can reverse the nonequilibrium characteristics of the system and change the thermophonon flux from positive to negative. We also investigate in detail the influence of the driving power and the photon tunneling strength on the flux, which can widen the energy transfer channel of the system. The results obtained here have a potential application in the thermal noise energy harvesting and rectification by the optomechanical setup.

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  • Received 26 September 2020
  • Accepted 13 April 2021

DOI:https://doi.org/10.1103/PhysRevA.103.043521

©2021 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Yu Wu1, Wenjie Nie1,*, Guoyao Li1, Aixi Chen2,†, and Yueheng Lan3,‡

  • 1Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China
  • 2Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China
  • 3Department of Physics, Beijing University of Posts and Telecommunications, Beijing 100876, China

  • *niewenjiezhu@sina.cn
  • aixichen@zstu.edu.cn
  • lanyh@bupt.edu.cn

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Issue

Vol. 103, Iss. 4 — April 2021

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