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Long-lived coherence originating from electronic-vibrational couplings in light-harvesting complexes
liangxianting
Author NameAffiliationE-mail
liangxianting none liangxianting@nbu.edu.cn 
Abstract:
In this paper, we theoretically investigate the evolutions of two-dimensional, third-order, nonlinear photon echo rephasing spectra with population time t2 by using an exact numerical path integral method. It is shown that for the same system, the coherence and relaxation times of excitonic states are short, however, if the couplings of electronic and intra-pigment vibrational modes are considered, the coherence and relaxation times of this vibronic states are greatly extended. It means that the couplings between electronic and vibrational modes play important role in keeping long-lived coherence in light-harvesting complexes. Particularly, by using the method we can x the transition path of the energy transfer in bio-molecular systems.
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FundProject:
Long-lived coherence originating from electronic-vibrational couplings in light-harvesting complexes
liangxianting
摘要:
In this paper, we theoretically investigate the evolutions of two-dimensional, third-order, nonlinear photon echo rephasing spectra with population time t2 by using an exact numerical path integral method. It is shown that for the same system, the coherence and relaxation times of excitonic states are short, however, if the couplings of electronic and intra-pigment vibrational modes are considered, the coherence and relaxation times of this vibronic states are greatly extended. It means that the couplings between electronic and vibrational modes play important role in keeping long-lived coherence in light-harvesting complexes. Particularly, by using the method we can x the transition path of the energy transfer in bio-molecular systems.
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