Electromagnetic confinement in optical resonators of diminishing dimensions has enabled unprecedented light–matter interaction strengths. This miniaturization trend has a nonlocal limit, which, surprisingly, originates from the matter excitations rather than the light.

中文翻译：

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在非局域极限处消失的极化子

尺寸递减的光学谐振器中的电磁限制使光-物质相互作用强度前所未有。这种小型化趋势有一个非局部极限，令人惊讶的是，它源于物质激发而不是光。