Browsing by Author "Fujita, Takatoshi"
Now showing items 1-6 of 6
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Atomistic Study of Energy Funneling in the Light-Harvesting Complex of Green Sulfur Bacteria
Huh, Joonsuk; Saikin, Semion K.; Brookes, Jennifer Clare; Valleau, Stephanie; Fujita, Takatoshi; Aspuru-Guzik, Alan (American Chemical Society (ACS), 2014)Phototrophic organisms such as plants, photosynthetic bacteria, and algae use microscopic complexes of pigment molecules to absorb sunlight. Within the light-harvesting complexes, which frequently have several functional ... -
Coherent Dynamics of Mixed Frenkel and Charge-Transfer Excitons in Dinaphtho[2,3-b:2′3′-f]thieno[3,2-b]-thiophene Thin Films: The Importance of Hole Delocalization
Fujita, Takatoshi; Atahan-Evrenk, Sule; Sawaya, Nicolas Per Dane; Aspuru-Guzik, Alan (American Chemical Society (ACS), 2016)Charge-transfer states in organic semiconductors play crucial roles in processes such as singlet fission and exciton dissociation at donor/acceptor interfaces. Recently, a time-resolved spectroscopy study of dinaphtho[2, ... -
Linear-Algebraic Bath Transformation for Simulating Complex Open Quantum Systems
Huh, Joonsuk; Mostame, Sarah; Fujita, Takatoshi; Yung, Man-Hong; Aspuru-Guzik, Alan (IOP Publishing, 2014)In studying open quantum systems, the environment is often approximated as a collection of non-interacting harmonic oscillators, a configuration also known as the star-bath model. It is also well known that the star-bath ... -
Memory-Assisted Exciton Diffusion in the Chlorosome Light-Harvesting Antenna of Green Sulfur Bacteria
Fujita, Takatoshi; Brookes, Jennifer Clare; Saikin, Semion K.; Aspuru-Guzik, Alan (American Chemical Society, 2012)Chlorosomes are likely the largest and most efficient natural light-harvesting photosynthetic antenna systems. They are composed of large numbers of bacteriochlorophylls organized into supramolecular aggregates. We explore ... -
A stochastic reorganizational bath model for electronic energy transfer
Fujita, Takatoshi; Huh, Joonsuk; Aspuru-Guzik, Alan (AIP Publishing, 2014)Environmentally induced fluctuations of the optical gap play a crucial role in electronic energy transfer dynamics. One of the simplest approaches to incorporate such fluctuations in energy transfer dynamics is the well ... -
Theoretical characterization of excitation energy transfer in chlorosome light-harvesting antennae from green sulfur bacteria
Fujita, Takatoshi; Huh, Joonsuk; Saikin, Semion K.; Brookes, Jennifer Clare; Aspuru-Guzik, Alan (Springer Science + Business Media, 2014)We present a theoretical study of excitation dynamics in the chlorosome antenna complex of green photosynthetic bacteria based on a recently proposed model for the molecular assembly. Our model for the excitation energy ...