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Vibronically coherent speed-up of the excitation energy transfer in the Fenna-Matthews-Olson complex
Ist Teil von
Physical review. E, Statistical, nonlinear, and soft matter physics, 2015-02, Vol.91 (2), p.022706-022706, Article 022706
Ort / Verlag
United States
Erscheinungsjahr
2015
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
We show that underdamped molecular vibrations fuel the efficient excitation energy transfer in the Fenna-Matthews-Olson molecular aggregate under realistic physiological conditions. By employing an environmental fluctuation spectral function derived from experiments, we obtain numerically exact results for the exciton quantum dynamics in the presence of underdamped vibrationally coherent quantum states. Assuming the prominent 180-cm(-1) vibrational mode to be underdamped, additional coherent transport channels for the excitation energy transfer open up and we observe an increase of the transfer speed towards the reaction center by up to 24%.