Geometry, supertransfer, and optimality in the light harvesting of purple bacteria
arXiv:1604.05482 · doi:10.1021/acs.jpclett.6b01779
Abstract
The remarkable rotational symmetry of the photosynthetic antenna complexes of purple bacteria has long been thought to enhance their light harvesting and excitation energy transport. We study the role of symmetry by modeling hypothetical antennas whose symmetry is broken by altering the orientations of the bacteriochlorophyll pigments. We find that in both LH2 and LH1 complexes, symmetry increases energy transfer rates by enabling the cooperative, coherent process of supertransfer. The enhancement is particularly pronounced in the LH1 complex, whose natural geometry outperforms the average randomized geometry by 5.5 standard deviations, the most significant coherence-related enhancement found in a photosynthetic complex.
References in corpus (10)
- Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
- Dephasing assisted transport: Quantum networks and biomolecules
- Environment-Assisted Quantum Transport
- Efficiency of energy transfer in a light-harvesting system under quantum coherence
- Does coherence enhance transport in photosynthesis?
- Long-lived quasi-stationary coherences in V-type system driven by incoherent light
- Forster resonance energy transfer, absorption and emission spectra in multichromophoric systems: III. Exact stochastic path integral evaluation
- Modified Bloch-Redfield Master Equation for Incoherent Excitation of Multilevel Quantum Systems
- Förster resonance energy transfer, absorption and emission spectra in multichromophoric systems: I. Cumulant expansions
- Numerical Evidence for Robustness of Environment-Assisted Quantum Transport
Cited by in corpus (13)
- Generalised Marcus Theory for Multi-Molecular Delocalised Charge Transfer
- Classification of Coherent Enhancements of Light-Harvesting Processes
- Coherent and controllable enhancement of light-harvesting efficiency
- Light-harvesting with guide-slide superabsorbing condensed-matter nanostructures
- Environmentally improved coherent light harvesting
- Photonic quantum walks with four-dimensional coins
- Eliminating radiative losses in long-range exciton transport
- Structure-Dynamics Relation in Physically-Plausible Multi-Chromophore Systems
- Bio-inspired natural sunlight-pumped lasers
- Structure-based Hamiltonian model for IsiA uncovers a highly robust pigment protein complex
- Optimisation of ultrafast singlet fission in 1D rings towards unit efficiency
- Incoherent witnessing of quantum coherence
- Machine Learning for Quantum Dynamics: Deep Learning of Excitation Energy Transfer Properties