Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spatial propagation of excitonic coherence enables ratcheted energy
  transfer   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 possible biological role
for coherent oscillations in spatially directing energy transfer. Our results
emphasize the importance of analyzing long-range energy transfer in terms of
transfer between inter-complex coupling (ICC) states rather than between site
or exciton states.

9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph