中国物理B ›› 2026, Vol. 35 ›› Issue (1): 14207-014207.doi: 10.1088/1674-1056/ade386

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Atomic ensemble-assisted ground-state cooling of a rotating mirror in a triple Laguerre–Gaussian cavity

Xiaoxuan Li(李晓璇), Junfei Chen(陈骏飞), and Qingxia Mu(穆青霞)†   

  1. Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2025-04-12 修回日期:2025-06-07 接受日期:2025-06-11 发布日期:2026-01-09
  • 通讯作者: Qingxia Mu E-mail:qingxiamu@ncepu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62471180).

Atomic ensemble-assisted ground-state cooling of a rotating mirror in a triple Laguerre–Gaussian cavity

Xiaoxuan Li(李晓璇), Junfei Chen(陈骏飞), and Qingxia Mu(穆青霞)†   

  1. Mathematics and Physics Department, North China Electric Power University, Beijing 102206, China
  • Received:2025-04-12 Revised:2025-06-07 Accepted:2025-06-11 Published:2026-01-09
  • Contact: Qingxia Mu E-mail:qingxiamu@ncepu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62471180).

摘要: We propose a novel cooling protocol within a triple-Laguerre-Gaussian cavity optomechanical system, which is designed to suppress the thermal vibrations of a rotating mirror to reach its quantum ground state. The system incorporates two auxiliary cavities and an atomic ensemble coupled to a Laguerre-Gaussian rotational cavity. By carefully selecting system parameters, the cooling process of the rotating mirror is significantly enhanced, while the heating process is effectively suppressed, enabling efficient ground-state cooling even in the unresolved sideband regime. Compared to previous works, our scheme reduces the stringent restrictions on auxiliary systems, making it more experimentally feasible under broader parameter conditions. These findings provide a robust approach for achieving ground-state cooling in mechanical resonators.

关键词: Atomic ensemble-assisted ground-state cooling of a rotating mirror in a triple Laguerre–Gaussian cavity

Abstract: We propose a novel cooling protocol within a triple-Laguerre-Gaussian cavity optomechanical system, which is designed to suppress the thermal vibrations of a rotating mirror to reach its quantum ground state. The system incorporates two auxiliary cavities and an atomic ensemble coupled to a Laguerre-Gaussian rotational cavity. By carefully selecting system parameters, the cooling process of the rotating mirror is significantly enhanced, while the heating process is effectively suppressed, enabling efficient ground-state cooling even in the unresolved sideband regime. Compared to previous works, our scheme reduces the stringent restrictions on auxiliary systems, making it more experimentally feasible under broader parameter conditions. These findings provide a robust approach for achieving ground-state cooling in mechanical resonators.

Key words: triple Laguerre-Gaussian cavity, rotating mirror, ground-state cooling, atomic ensemble, rotational dynamics

中图分类号:  (Resonators, cavities, amplifiers, arrays, and rings)

  • 42.60.Da
42.50.Nn (Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems) 03.65.Yz (Decoherence; open systems; quantum statistical methods)