中国物理B ›› 2025, Vol. 34 ›› Issue (4): 44202-044202.doi: 10.1088/1674-1056/adb266

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

Qinghong Liao(廖庆洪)1,2,†, Songyun Ouyang(欧阳嵩沄)1, Shaoping Cheng(程绍平)1, and Yiping Cheng(程依萍)1   

  1. 1 Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China;
    2 Chongqing Research Institute of NCU, Nanchang University, Chongqing 402660, China
  • 收稿日期:2024-11-28 修回日期:2025-01-16 接受日期:2025-02-05 出版日期:2025-04-15 发布日期:2025-04-15
  • 通讯作者: Qinghong Liao E-mail:nculqh@163.com
  • 基金资助:
    This project was 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), and the Opening Project of Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology (Grant No. ammt2021A-4).

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

Qinghong Liao(廖庆洪)1,2,†, Songyun Ouyang(欧阳嵩沄)1, Shaoping Cheng(程绍平)1, and Yiping Cheng(程依萍)1   

  1. 1 Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China;
    2 Chongqing Research Institute of NCU, Nanchang University, Chongqing 402660, China
  • Received:2024-11-28 Revised:2025-01-16 Accepted:2025-02-05 Online:2025-04-15 Published:2025-04-15
  • Contact: Qinghong Liao E-mail:nculqh@163.com
  • Supported by:
    This project was 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), and 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

Abstract: 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.

Key words: ground-state cooling, quantum well, coherent feedback, optomechanical system

中图分类号:  (Atom cooling methods)

  • 37.10.De
37.10.Gh (Atom traps and guides) 42.65.Tg (Optical solitons; nonlinear guided waves) 42.50.Pq (Cavity quantum electrodynamics; micromasers)