"Quantum nanophotonics with low-dimensional structures: Interfacing quantum optics and material science" by Prof. K. Słowik (NCU Torun, Poland)

Low-dimensional material structures made of graphene or other 2D materials may serve as fundamental building blocks for multilayered heterostructures, and exhibit topological properties or plasmonic optical responses that can be fine-tuned via electronic or optical manipulation. In the seminar, Prof. Karolina Słowik (Nicolaus Copernicus University in Torun, Poland) will discuss a framework to model the optoelectronic properties of low-dimensional structures, that combines solid-state and quantum-optical tools. The framework allows tackling experimentally relevant systems, such as atom chains, graphene flakes or more complicated heterostructures. Applications of the framework to investigate the physical mechanism of plasmonic excitations in quantum-mechanical systems and to study the role of atomic defects in chains will be demonstrated.
  • "Quantum nanophotonics with low-dimensional structures: Interfacing quantum optics and material science" by Prof. K. Słowik (NCU Torun, Poland)
  • 2023-07-11T16:00:00+02:00
  • 2023-07-11T23:59:59+02:00
  • Low-dimensional material structures made of graphene or other 2D materials may serve as fundamental building blocks for multilayered heterostructures, and exhibit topological properties or plasmonic optical responses that can be fine-tuned via electronic or optical manipulation. In the seminar, Prof. Karolina Słowik (Nicolaus Copernicus University in Torun, Poland) will discuss a framework to model the optoelectronic properties of low-dimensional structures, that combines solid-state and quantum-optical tools. The framework allows tackling experimentally relevant systems, such as atom chains, graphene flakes or more complicated heterostructures. Applications of the framework to investigate the physical mechanism of plasmonic excitations in quantum-mechanical systems and to study the role of atomic defects in chains will be demonstrated.
  • Cosa Seminario (Ricerca)
  • Quando il 11/07/2023 dalle 16:00 (Europe/Berlin / UTC200)
  • Dove Aula B, Dipartimento Interateneo di Fisica
  • Contatti
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TITLE
Quantum nanophotonics with low-dimensional structures: Interfacing quantum optics and material science

ABSTRACT
Low-dimensional material structures, such as 1D atomic chains or 2D nanoflakes, possess a plethora of electronic, optical, and material properties that are contingent on their chemical compounds and geometry. They may serve as fundamental building blocks for multilayered heterostructures, which enable the realization of nanoscaled optoelectronics. Additionally, they may exhibit topological properties or plasmonic optical responses that can be fine-tuned via electronic or optical manipulation. In the seminar, I will discuss a framework we have developed to model the optoelectronic properties of low-dimensional structures, combining solid-state and quantum-optical tools: The tight-binding approximation to capture the electronic structure and the master equation approach to access the electron dynamics upon electromagnetic illumination. The combination allows us to tackle experimentally relevant systems, such as molecular chains or flakes and stacks of selected 2D materials. Applications of the framework to investigate the physical mechanism of plasmonic excitations in quantum-mechanical systems and to study the role of atomic defects in molecular chains will be demonstrated.

SPEAKER
Karolina Słowik is a professor at the Institute of Physics, Nicolaus Copernicus University in Torun (NCU). The research interests of her group cover aspects of quantum optics, nanophotonics and solid-state theory. She has earned her PhD at the NCU with a thesis on light storage in coherent media. As a postdoc at the Friedrich Schiller University in Jena and the Karlsruhe Institute of Technology in Germany, she contributed to the theory of interactions of atomic systems with medium-assisted fields beyond the electric dipole approximation, as it may be essential in the context of quantum plasmonics. Back at NCU, she continues research on quantum plasmonics in the context of low-dimensional materials. Another research line focusing on interactions of polar systems with light is developed in collaboration with the Quantum theory group in Bari.