Efficient estimation of energy transfer efficiency in light-harvesting complexes
Name
Shabani-2012-Efficient estimation of energy transfer efficiency.pdf
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2.22 MB
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Checksum (MD5)
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Author(s)
Mohseni, Masoud
Lloyd, Seth
Shabani, Alireza
Rabitz, Herschel
Date Issued
July 2012
Journal
Physical Review E
Publisher
American Physical Society
Citation
Shabani, A. et al. “Efficient Estimation of Energy Transfer Efficiency in Light-harvesting Complexes.” Physical Review E 86.1 (2012). ©2012 American Physical Society
Version
Final published version
Abstract
The fundamental physical mechanisms of energy transfer in photosynthetic complexes is not yet fully understood. In particular, the degree of efficiency or sensitivity of these systems for energy transfer is not known given their realistic with surrounding photonic and phononic environments. One major problem in studying light-harvesting complexes has been the lack of an efficient method for simulation of their dynamics in biological environments. To this end, here we revisit the second order time-convolution (TC2) master equation and examine its reliability beyond extreme Markovian and perturbative limits. In particular, we present a derivation of TC2 without making the usual weak system-bath coupling assumption. Using this equation, we explore the long-time behavior of exciton dynamics of Fenna-Matthews-Olson (FMO) portein complex. Moreover, we introduce a constructive error analysis to estimate the accuracy of TC2 equation in calculating energy transfer efficiency, exhibiting reliable performance for system-bath interactions with weak and intermediate memory and strength. Furthermore, we numerically show that energy transfer efficiency is optimal and robust for the FMO protein complex of green sulfur bacteria with respect to variations in reorganization energy and bath correlation time scales.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevE.86.011915
