Quantum emitters, superradiance and surface modes in J-aggregates

• Grant number: 24/05040-5
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: September 01, 2025
• End date: August 31, 2026
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: André Jorge Carvalho Chaves
• Grantee: Victor Gabriel Morele Duarte
• Supervisor: Nuno Miguel Machado Reis Peres
• Host Institution: Divisão de Ciências Fundamentais (IEF). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
• Institution abroad: International Iberian Nanotechnology Laboratory (INL), Portugal
• Associated to the scholarship: 23/14231-6 - Quantum emitters and superradiance in two dimensional materials, BP.DR

Abstract

Molecular aggregates are formed from the non-covalent bond between molecules. A particular case are organic dyes, which, depending on the relative orientation between orbitals of different molecules, can form H or J aggregates. The case of J-type aggregates is interesting for optical applications, as they have excitons delocalized between the molecules with strong interaction with the light, characterized by a strong resonance and low width. Recently, J-aggregate thin films have been synthesized. This BEPE project deals with the theoretical study of one- and two-dimensional J-aggregates, to be carried out at the International Iberian Nanotechnology Laboratory, focusing on optical properties, including the calculation of linear optical conductivity, surface and microcavity polaritons, and superradiance.