Triana-Arango Freiman, Ramos-Ortiz Gabriel, Ramírez-Alarcón Roberto
Centro de Investigaciones en Óptica AC, Apartado Postal 37150, León, Gto, México.
J Phys Chem A. 2023 Mar 23;127(11):2608-2617. doi: 10.1021/acs.jpca.2c07356. Epub 2023 Mar 13.
Recently, different experimental methods intended to detect the entangled two-photon absorption (ETPA) phenomenon in a variety of materials have been reported. The present work explores a different approach in which the ETPA process is studied based on the changes induced in the visibility of a Hong-Ou-Mandel (HOM) interferogram. By using an organic solution of Rhodamine B as a model of nonlinear material interacting with entangled photons at ∼800 nm region produced by spontaneous parametric down-conversion (SPDC) Type-II, the conditions that make possible to detect changes in the visibility of a HOM interferogram upon ETPA are investigated. We support the discussion of our results by presenting a model in which the sample is considered as a spectral filtering function which fulfills the energy conservation conditions required by ETPA, allowing us to explain the experimental observations with good agreement. We believe that this work represents a new perspective to studying the ETPA interaction, by using an ultrasensitive quantum interference technique and a detailed mathematical model of the process.
最近，已有报道不同的实验方法用于检测多种材料中的纠缠双光子吸收（ETPA）现象。本研究探索了一种不同的方法，即基于Hong-Ou-Mandel（HOM）干涉图可见度的变化来研究ETPA过程。通过使用罗丹明B的有机溶液作为非线性材料的模型，该材料与由II型自发参量下转换（SPDC）在~800nm区域产生的纠缠光子相互作用，研究了在ETPA时能够检测HOM干涉图可见度变化的条件。我们通过提出一个模型来支持对结果的讨论，在该模型中，样品被视为一个光谱滤波函数，它满足ETPA所需的能量守恒条件，从而使我们能够很好地解释实验观察结果。我们相信，这项工作通过使用超灵敏量子干涉技术和该过程的详细数学模型，为研究ETPA相互作用提供了一个新的视角。
