Entangled two-photon absorption detection through a Hong-Ou-Mandel interferometer

• URL: http://arxiv.org/abs/2202.05985v1
• Date: Sat, 12 Feb 2022 05:00:11 GMT
• Title: Entangled two-photon absorption detection through a Hong-Ou-Mandel interferometer
• Authors: Freiman Triana-Arango, Gabriel Ramos-Ortiz and Roberto Ram\'irez-Alarc\'on
• Abstract summary: The ETPA process is detected based on the changes induced on the Hong-Ou-Mandel interferogram of two photons produced by a spontaneous parametric down conversion process. We present a detail model in which the sample is modeled as a filtering function which fullfills the energy conservation conditions required by ETPA.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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