Coherent feedback ground-state cooling of mechanical resonators assisted by a quantum well  

作　　者：Qinghong Liao Songyun Ouyang Shaoping Cheng Yiping Cheng 廖庆洪;欧阳嵩沄;程绍平;程依萍

机构地区：[1]Department of Electronic Information Engineering,Nanchang University,Nanchang 330031,China [2]Chongqing Research Institute of NCU,Nanchang University,Chongqing 402660,China

出　　处：《Chinese Physics B》2025年第4期405-411,共7页中国物理B(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.62061028 and 62461035);the Key Project of Natural Science Foundation of Jiangxi Province(Grant No.20232ACB202003);the Finance Science and Technology Special“contract system”Project of Nanchang University Jiangxi Province(Grant No.ZBG20230418015);the Natural Science Foundation of Chongqing(Grant No.CSTB2024NSCQ-MSX0412);the Opening Project of Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology(Grant No.ammt2021A-4).

摘　　要：We theoretically investigate a cooling scheme assisted by a quantum well(QW)and coherent feedback within a hybrid optomechanical system.Although the exciton mode in the QW and the mechanical resonator(MR)are initially uncoupled,their interaction via the microcavity field leads to an indirect exciton-mode–mechanical-mode coupling.The coherent feedback loop is applied by feeding back a fraction of the output field of the cavity through a controllable beam splitter to the cavity’s input mirror.It is shown that the cooling capability is enhanced by effectively suppressing the Stokes process through coupling with the QW.Furthermore,the effect of the anti-Stokes process is enhanced through the application of the coherent feedback loop.This particular system configuration enables cooling of the mechanical resonator even in the unresolved sideband regime(USR).This study has some important guiding significance in the field of quantum information processing.

关 键 词：ground-state cooling quantum well coherent feedback optomechanical system 

分 类 号：O413[理学—理论物理]