Optimal number of pigments in photosynthetic complexes

Abstract

We study excitation energy transfer in a simple model of photosynthetic complex. The model, described by Lindblad equation, consists of pigments interacting via dipole-dipole interaction. Overlapping of pigments induces an on-site energy disorder, providing a mechanism for blocking the excitation transfer. Based on the average efficiency as well as robustness of random configurations of pigments, we calculate the optimal number of pigments that should be enclosed in a pigment-protein complex of a given size. The results suggest that a large fraction of pigment configurations are efficient as well as robust if the number of pigments is properly chosen. We compare optimal results of the model to the structure of pigment-protein complexes as found in nature, finding good agreement.

arXiv comment20 pages, 7 figures; v2.: new appendix, published version

References in corpus (11)

• Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
• Environment-Assisted Quantum Transport
• Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
• Role of quantum coherence in chromophoric energy transport
• Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-temporal correlations
• High-performance solution of hierarchical equations of motions for studying energy-transfer in light-harvesting complexes
• Exciton dynamics and Quantumness of energy transfer in the Fenna-Matthews-Olson complex
• Efficient and coherent excitation transfer across disordered molecular networks
• The Physical Basis for Long-lived Electronic Coherence in Photosynthetic Light Harvesting Systems
• An efficient method to calculate excitation energy transfer in light harvesting systems. Application to the FMO complex
• The optimization topography of exciton transport

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