publication . Preprint . Article . 2011

Spatial propagation of excitonic coherence enables ratcheted energy transfer

Stephan Hoyer; Akihito Ishizaki; K. Birgitta Whaley;
Open Access English
  • Published: 15 Jun 2011
Abstract
Experimental evidence shows that a variety of photosynthetic systems can preserve quantum beats in the process of electronic energy transfer, even at room temperature. However, whether this quantum coherence arises in vivo and whether it has any biological function have remained unclear. Here we present a theoretical model that suggests that the creation and recreation of coherence under natural conditions is ubiquitous. Our model allows us to theoretically demonstrate a mechanism for a ratchet effect enabled by quantum coherence, in a design inspired by an energy transfer pathway in the Fenna-Matthews-Olson complex of the green sulfur bacteria. This suggests a ...
Subjects
arXiv: Physics::Biological Physics
free text keywords: Quantum Physics, Physics - Biological Physics, Physics - Chemical Physics, Statistics and Probability, Statistical and Nonlinear Physics, Condensed Matter Physics, Exciton, Physics, Quantum mechanics, Oscillation, Coherence (physics), Coupling, Quantum beats, Energy transfer, Ratchet effect, Quantum
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publication . Preprint . Article . 2011

Spatial propagation of excitonic coherence enables ratcheted energy transfer

Stephan Hoyer; Akihito Ishizaki; K. Birgitta Whaley;