BK21 SEMINAR: Prof. Seogjoo J. Jang (Queens College, City University o…2026. 7. 14. (Tue), 11:00
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댓글 0건 조회 135회 작성일 26-07-09 11:16본문
BK21 SEMINAR
♧ Speaker: Prof. Seogjoo J. Jang (Queens College, City University of New York, USA)
♧ Date: 2026. 7. 14. (Tue), 11:00
♧ Venue: Chemistry Bldg. Room #201
Theories and Computational Methods for Quantum Transitions in Light Energy Conversion, Imaging, and Sensing
Great advances have been made over many decades in characterizing electronic excited states and their quantum transitions in complex molecular environments. Depending on the nature of the system and its environments, these quantum transitions can be described either by rates or through a more complete quantum dynamical treatment. For calculating rates of exciton transfer and decay, Fermi’s golden rule (FGR) has been widely and successfully used to describe many molecular systems. However, when applied to complex molecular systems, FGR faces some ambiguities and limitations that call for further refinement and development.
In this talk, I will present our recently developed quantum rate theories for resonance energy transfer and nonradiative decay, which reveal quantum effects that were absent in previously established theories. Applications to photosynthetic light harvesting complexes and organic dye molecules demonstrate how these improved theories enable more accurate and quantitative description of exciton transfer and nonradiative decay rates.
For transitions that cannot be fully captured by rates alone, more advanced quantum dynamics approaches are needed. To this end, we have been developing a range of open-system quantum dynamics methods, including polaron-transformed quantum master equation approaches. The implications and utility of these methods for driven open system quantum dynamics processes, such as those relevant to quantum sensing, will also be discussed.
Host: Prof. Sunmin Ryu (T.279-2124)
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