光力学中通过真空观测到的能量交换的解释
Explanation of the Observed Energy Exchange through the vacuum in Optomechanics
- Università di Pavia（帕维亚大学）
- RIKEN（理化学研究所）
- The University of Michigan（密歇根大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文通过全量子模型揭示高阶光力相互作用产生声子-声子耦合，定量解释真空介导能量交换，并提出循环过程实现净功提取。
AI中文摘要：
在腔光力学中，标准的大失谐机制通常通过仅保留辐射压相互作用来描述，而高阶的镜子-场相互作用被假定为可忽略不计。然而，这种近似无法为Fong等人[Nature 第576卷, 243 (2019)]实验中观测到的机械膜之间通过真空介导的热传递提供微观解释，该现象的物理起源一直处于激烈争论之中。在此，我们使用一个全量子模型，表明被忽略的高阶光力相互作用自然产生声子-声子耦合，并在标准光力学框架内定量解释了观测到的能量交换。基于这一微观描述，我们进一步提出一个协议，其中声子-声子相互作用驱动一个循环过程，从而实现净功提取。我们的结果确立了高阶光力相互作用的基本作用，并为描述超越线性近似的下一代光力学实验提供了微观框架。
英文摘要：
In cavity optomechanics, the standard large-detuning regime is commonly described by retaining only the radiation-pressure interaction, while higher-order mirror--field interactions are assumed to be negligible. This approximation, however, fails to provide a microscopic explanation for the vacuum-mediated heat transfer observed between the mechanical membranes in the experiment of Fong, et.al.,[Nature \textbf{576}, 243 (2019)], whose physical origin has remained under active debate. Here, using a fully quantum model, we show that the neglected higher-order optomechanical interactions naturally generate phonon-phonon coupling and quantitatively account for the observed energy exchange within the standard optomechanical framework. Building on this microscopic description, we further propose a protocol in which phonon-phonon interaction drives a cyclic process enabling net work extraction. Our results establish the fundamental role of higher-order optomechanical interactions and provide a microscopic framework for describing next-generation optomechanical experiments beyond the linear approximation.
