Structured environments are employed in a plethora of applications to tailor dynamics of light–matter interaction processes by modifying the structure of electromagnetic fields. The promising example of such a system is antiresonant photonic crystal fibers (AR-PCFs), which allow light–analyte interactions in a very long channel. Here we probe contribution of microstructuring and nontrivial mode hierarchy on light–matter interactions in AR-PCFs by investigating lifetime shortening of perovskite (${\text{CsPbBr}}_3$) nanocrystals grown to fiber capillaries. The crystals have been deposited using a wet chemistry approach and then excited by a supercontinuum source in the 450–500 nm range. Emission spectra have been measured and analyzed via the time-correlated single photon counting (TCSPC) technique, unravelling contributions of core and cladding modes. Fluorescence lifetime imaging inside an AR-PCF enables mapping input of various electromagnetic channels into light–matter interaction processes. Our results pave the way for tailoring the dynamics of high-order quantum processes, promoting the concept of AR-PCF as a light-driven reactor.

中文翻译：

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用反共振光子晶体光纤内的钙钛矿纳米晶体改变光与物质的相互作用

结构化环境在大量应用中被采用，通过修改电磁场的结构来定制光-物质相互作用过程的动力学。这种系统的有前途的例子是反共振光子晶体光纤 (AR-PCF)，它允许光与分析物在很长的通道中相互作用。在这里，我们通过研究钙钛矿的寿命缩短来探讨微观结构和非平凡模式层次对 AR-PCF 中光-物质相互作用的贡献。${\text{溴化铅}}_3$) 生长到纤维毛细管的纳米晶体。晶体已使用湿化学方法沉积，然后由 450-500 nm 范围内的超连续谱源激发。已经通过时间相关单光子计数 (TCSPC) 技术测量和分析了发射光谱，揭示了纤芯和包层模式的贡献。AR-PCF 内的荧光寿命成像能够将各种电磁通道的输入映射到光-物质相互作用过程中。我们的结果为定制高阶量子过程的动力学铺平了道路，促进了 AR-PCF 作为光驱动反应器的概念。