Effect of Strong Electron Correlation on the Efficiency of Photosynthetic Light Harvesting

Details Effect of Strong Electron Correlation on the Efficiency of Photosynthetic Light Harvesting Effect of Strong Electron Correlation on the Efficiency of Photosynthetic Light Harvesting

2011-12-26

arxiv.org/abs/1112.5863v1

Physics

Biological Physics

Scientific paper

Research into the efficiency of photosynthetic light harvesting has focused on two factors: (1) entanglement of chromophores, and (2) environmental noise. In this Letter efficiency is shown to be equally affected by a third factor: (3) strong electron correlation. While chromophores are conjugated \pi-bonding molecules with strongly correlated electrons, previous models have not treated this correlation explicitly. Here we generalize the single-electron models to a multi-electron model and show that correlation enhances the energy-transfer efficiency in the model by more than 100%. Implications include insights into the interplay of correlation and entanglement as well as new design principles for energy-efficient materials.

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