Gain-enhanced suspended optomechanical system with tunable dissipative coupling strength

Author:

Feng ZijianORCID,He Yutong,Xiong Wei,Jia Yonglei,Pan Yao,Xu Ziwei,Han XiangORCID,Chen Xinlin,Kuang TengfangORCID,Xiao GuangzongORCID,Yang Kaiyong,Luo Hui

Abstract

Active cavity optomechanical system provides an invaluable physical platform for cavity optomechanics research, particularly those involving dissipative coupling, which holds significant potential for advancing the field of quantum physics. In our previous work, an active levitated optomechanical system was established for the first time [Nat. Phys 19, 414 (2023)10.1038/s41567-022-01857-9]. Here we report a gain-enhanced suspended optomechanical system based on the dissipative coupling between the SiN membrane and the intracavity laser. This system has a high dissipative coupling strength which is widely tunable through simple mechanical adjustments. Moreover, the influence of pumping power and the propagation distance of the free-space beam on the maximum effective dissipative coupling strength is comprehensively investigated. Based on the numerical discussion, we propose effective methods to enhance the dissipative coupling experimentally. The active suspended cavity optomechanical system has great potential in realizing the cooling of the membrane to the quantum ground state or heating the membrane to produce phonon lasers, which can be applied to such cutting-edge fields as quantum precision measurements, macroscopic quantum state, and information transmission and processing.

Funder

Science Fund for Distinguished Young Scholars of Hunan Province

The Key Science and Technology Breakthrough Program of Hunan Province

Natural Science Foundation of Hunan Province

Publisher

Optica Publishing Group

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