On the Equivalence of Quantum and Classical Coherence in Electronic   Energy Transfer
  To investigate the effect of quantum coherence on electronic energy transfer, which is the subject of current interest in photosynthesis, we solve the problem of transport for the simplest model of an aggregate of monomers interacting through dipole-dipole forces using both quantum and classical dynamics. We conclude that for realistic coupling strengths quantum and classical coherent transport are identical. This is demonstrated by numerical calculations for a linear chain and for the photosynthetic Fenna-Matthews-Olson (FMO) complex 
J.S. Briggs and A. Eisfeld
quant-ph physics.bio-ph physics.chem-ph