利用泵浦调制将pt对称腔光机械系统中的机械谐振腔冷却至基态

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-03-18 DOI:10.1016/j.rinp.2025.108184

Rui Chang, Suying Zhang

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引用次数: 0

摘要

我们提出了一种在pt对称腔光机械系统中将机械谐振腔冷却到基态的方案。该系统的特点是损耗光机械腔与增益腔耦合，损耗腔由调幅激光场驱动。利用数值模拟的方法，详细研究了系统的稳定性和机械谐振器的冷却性能。我们发现系统在不间断pt对称区域内几乎是稳定的。机械谐振器在可分辨边带和非可分辨边带两种情况下均可实现基态冷却。值得注意的是，未破缺pt对称区的冷却效率明显高于其破缺pt对称区的冷却效率。pt对称在优化机械谐振器的冷却性能中起着关键作用。这些发现为使用pt对称系统进行量子操作开辟了新的途径，在宏观光学器件中具有潜在的应用前景。

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Cooling mechanical resonator to ground state in P T-symmetric cavity optomechanical system via pump modulation

We propose a scheme to cool a mechanical resonator to its ground state in a

P T

-symmetric cavity optomechanical system. The system features a loss optomechanical cavity coupled to a gain cavity, with the loss cavity being driven by an amplitude-modulated laser field. Utilizing numerical simulation methods, we study the stability of the system and the cooling properties of the mechanical resonator in detail. We find that the system is almost stable within the unbroken

P T

-symmetry region. The mechanical resonator achieves ground state cooling in both resolved-sideband and unresolved-sideband regimes. Notably, the cooling efficiency is significantly higher in the unbroken

P T

-symmetry region compared to its broken counterpart.

P T

-symmetry plays a pivotal role in optimizing the cooling performance of the mechanical resonator. These findings open new avenues for quantum manipulation using

P T

-symmetric systems, with potential applications in macroscopic optical devices.

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

期刊介绍： Results in Physics is an open access journal offering authors the opportunity to publish in all fundamental and interdisciplinary areas of physics, materials science, and applied physics. Papers of a theoretical, computational, and experimental nature are all welcome. Results in Physics accepts papers that are scientifically sound, technically correct and provide valuable new knowledge to the physics community. Topics such as three-dimensional flow and magnetohydrodynamics are not within the scope of Results in Physics. Results in Physics welcomes three types of papers: 1. Full research papers 2. Microarticles: very short papers, no longer than two pages. They may consist of a single, but well-described piece of information, such as: - Data and/or a plot plus a description - Description of a new method or instrumentation - Negative results - Concept or design study 3. Letters to the Editor: Letters discussing a recent article published in Results in Physics are welcome. These are objective, constructive, or educational critiques of papers published in Results in Physics. Accepted letters will be sent to the author of the original paper for a response. Each letter and response is published together. Letters should be received within 8 weeks of the article''s publication. They should not exceed 750 words of text and 10 references.