The driven-dissipative nature of light-matter interaction inside a multimode, dye-filled microcavity makes it an ideal system to study nonequilibrium phenomena, such as transport. In this work, we investigate how light is efficiently transported inside such a microcavity, mediated by incoherent absorption and emission processes. In particular, we show that there exist two distinct regimes of transport, viz. conductive and localized, arising from the complex interplay between the thermalizing effect of the dye molecules and the nonequilibrium influence of driving and loss. The propagation of light in the conductive regime occurs when several localized cavity modes undergo dynamical phase transitions to a condensed, or lasing, state. Furthermore, we observe that, while such transport is robust for weak disorder in the cavity potential, strong disorder can lead to localization of light even under good thermalizing conditions. Importantly, the exhibited transport and localization of light is a manifestation of the nonequilibrium dynamics rather than any coherent interference in the system.

中文翻译：

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染料填充的微腔内部的光的传输和定位

多模，充满染料的微腔内部光-物质相互作用的驱动耗散性质使其成为研究非平衡现象（例如运输）的理想系统。在这项工作中，我们研究了如何通过不相干的吸收和发射过程介导的光在这样的微腔内有效传输。特别是，我们表明存在两种不同的运输方式，即。导电的和局部的，是由于染料分子的热效应与驱动和损耗的非平衡影响之间的复杂相互作用所致。当几个局部腔模经历动态相变到会聚或激射状态时，会发生导电状态下的光传播。此外，我们观察到，尽管这种转运对于空腔电位的微弱紊乱是稳健的，即使在良好的热条件下，强烈的无序现象也可能导致光线定位。重要的是，光的传输和局域化是非平衡动力学的体现，而不是系统中的任何相干干涉。