Vibration-assisted light absorption and excitation energy transfer in photosynthetic processes

Phonon-assisted excitation energy transfer between detuned pigments in photosynthetic system has been identified as a potential design principle for optimizing exciton migration on next-generation materials. Based on a detuned dimer system consisting of a donor and an acceptor modeled by two two-lev...

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Bibliographic Details
Published in:Quantum information processing 2021-09, Vol.20 (9), Article 292
Main Authors: Chen, Hao, Zong, Xiao-Lan, Song, Wei, Li, Da-Chuang, Cao, Zhuo-Liang
Format: Article
Language:English
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Summary:Phonon-assisted excitation energy transfer between detuned pigments in photosynthetic system has been identified as a potential design principle for optimizing exciton migration on next-generation materials. Based on a detuned dimer system consisting of a donor and an acceptor modeled by two two-level systems with different excitation energy, in which one of them is coupled to a high-energy vibrational mode and driven by a Gaussian-type pulse, we show the important role of the high-energy vibrational mode on both energy absorption and transfer in the detuned dimer model. It is found that, for driven pulse with fixed width, the efficiency of energy absorption and transfer varies with the parameters of the high-energy vibrational mode in different patterns, but there exist optimal parameters for both energy absorption and transfer. In addition, the narrower the width of the driven pulse is, the higher both the efficiency of energy absorption and transfer are.
ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-021-03207-9