The engineering of localized modes in photonic structures is one of the main targets of modern photonics. An efficient strategy to design these modes is to use the interplay of constructive and destructive interference in periodic photonic lattices. This mechanism is at the origin of the defect modes in photonic bandgaps, bound states in the continuum, and compact localized states in flat bands. Here, we show that in lattices of lossy resonators, the addition of external optical drives with a controlled phase enlarges the possibilities of manipulating interference effects and allows for the design of novel types of localized modes. Using a honeycomb lattice of coupled micropillars resonantly driven with several laser spots at energies within its photonic bands, we demonstrate the localization of light in at-will geometries down to a single site. These localized modes are fully reconfigurable and have the potentiality of enhancing nonlinear effects and of controlling light–matter interactions with single site resolution.

中文翻译：

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通过光子晶格中的相干驱动和耗散可重构光子定位

光子结构中局部模式的工程是现代光子学的主要目标之一。设计这些模式的有效策略是利用周期性光子晶格中相长干涉和相消干涉的相互作用。这种机制起源于光子带隙中的缺陷模式、连续谱中的束缚态和平带中的致密局域态。在这里，我们表明，在有损谐振器的晶格中，添加具有受控相位的外部光学驱动器扩大了操纵干涉效应的可能性，并允许设计新型局部模式。使用耦合微柱的蜂窝晶格，在其光子带内的能量处用几个激光点共振驱动，我们展示了光在任意几何形状中的定位到单个位置。