标题： 扰动开放腔：混合腔-纳米天线系统中的异常共振频率偏移 显示英文标题

标题： Perturbing open cavities: Anomalous resonance frequency shifts in a hybrid cavity-nanoantenna system

摘要： 一个小扰动对腔模式的影响在光学传感、腔量子电动力学和腔光力学等领域起着重要作用。通常，产生的腔频率偏移直接与扰动的极化率有关。在这里，我们展示了扰动辐射腔的粒子可以引起强烈的频率偏移，这些偏移与基于粒子极化率的效果相反，甚至超过这些效果。一种完整的电磁理论揭示了这些异常结果依赖于腔和纳米粒子辐射之间的非平凡相位关系，从而通过辐射连续体实现反作用。此外，还提出了一种基于耦合模理论的直观模型，将这一现象与延迟效应联系起来。由于耗散的普遍性，我们预计这些发现将有助于理解和设计一大类系统。 显示英文摘要

摘要： The influence of a small perturbation on a cavity mode plays an important role in fields like optical sensing, cavity quantum electrodynamics and cavity optomechanics. Typically, the resulting cavity frequency shift directly relates to the polarizability of the perturbation. Here we demonstrate that particles perturbing a radiating cavity can induce strong frequency shifts that are opposite to, and even exceed, the effects based on the particles' polarizability. A full electrodynamic theory reveals that these anomalous results rely on a non-trivial phase relation between cavity and nanoparticle radiation, allowing back-action via the radiation continuum. In addition, an intuitive model based on coupled mode theory is presented that relates the phenomenon to retardation. Because of the ubiquity of dissipation, we expect these findings to benefit the understanding and engineering of a wide class of systems.