论文标题
通过Hong-Ou-Mandel干涉仪纠缠的两光子吸收检测
Entangled two-photon absorption detection through a Hong-Ou-Mandel interferometer
论文作者
论文摘要
最近，已经报道了各种材料中研究纠缠两光子吸收（ETPA）过程的不同实验方法。目前的工作报告了一种不同的方法，该方法是根据自发参数降低转换（SPDC）类型-II过程对Hong-Ou-Mandel（HOM）干涉图引起的两个光子干扰图检测到的ETPA过程的。使用激光染料Rhodamine B的有机溶液作为模型，可以证明，在800nm时，ETPA可以通过与样品相互作用后光子分离器在光束分离器上产生的HOM干涉图的时间变化和可见性来监测ETPA。此外，我们提出了一个详细模型，其中样品被建模为过滤功能，该函数完整填充了ETPA所需的能量保护条件，从而可以用极好的一致性来解释实验观测。我们认为，这项工作代表了通过使用超敏感的量子干扰技术和该过程的详细数学模型来研究ETPA过程的新观点。
Recently, different experimental methods to investigate the entangled two-photon absorption (ETPA) process in a variety of materials have been reported. The present work reports on a different approach on which the ETPA process is detected based on the changes induced on the Hong-Ou-Mandel (HOM) interferogram of two photons produced by a spontaneous parametric down conversion (SPDC) Type-II process. Using an organic solution of the laser dye Rhodamine B as a model, it is demonstrated that ETPA at 800nm can be monitored by the changes in the temporal-width and visibility of the HOM interferogram produced by the photons at a beam splitter after interacting with the sample. Additionally, we present a detail model in which the sample is modeled as a filtering function which fullfills the energy conservation conditions required by ETPA, allowing to explain the experimental observations with excellent agreement. We believe that this work represents a new perspective to study the ETPA process, by using an ultra-sensitive quantum interference technique and a detailed mathematical model of the process.
