Efficiency of energy transfer in a light-harvesting system under quantum coherence
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We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center as it is found in natural photosynthetic systems. By using a quantum jump approach, we demonstrate that in the presence of quantum coherent energy transfer and energetic disorder, the efficiency of excitation transfer from the antenna to the reaction center depends intimately on the quantum superposition properties of the initial state. In particular, we find that efficiency is sensitive to symmetric and asymmetric superposition of states in the basis of localized excitations, indicating that initial-state properties can be used as an efficiency control parameter at low temperatures.
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The physically important relaxation pathway between sites 1 and 3 is mediated by pigments spectrally and spatially positioned by the protein to efficiently sample the spectral function of the protein's fluctuations.
“Indeed, it was found that the physically important relaxation pathway between sites 1 and 3 is mediated by pigments which are spectrally and spatially positioned by the protein to efficiently sample the spectral function of the proteins fluctuations [34, 61].”
From Vibrations, quanta and biology (2013) · cites this paper as [61]
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References 35 · Cited by 313
Research works printed but not linked: 1
- 11 H. Carmichael, An Open Systems Approach to Quantum Optics, Lecture Notes in Physics (Springer-Verlag, Berlin, 1993), Vol. 18.
- Authors
- Olaya-Castro, A., Lee, C. F., Olsen, F. F., & Johnson, N. F.
- Affiliations
- University of Oxford (GB)
- University of Miami (US)
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2008-08-12
- Volume
- 78
- Issue
- 8
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W2074643908
- Cited by
- 313
- References
- 35
- Citations by year
- 2026: 6 · 2025: 7 · 2024: 6 · 2023: 11 · 2022: 11 · 2021: 12 · 2020: 10 · 2019: 9 · 2018: 14 · 2017: 18 · 2016: 14 · 2015: 19 · 2014: 23 · 2013: 25 · 2012: 32
- FWCI
- 18.57
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review B (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- UCL Discovery (University College London) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Photochemistry and Electron Transfer Studies
- Keywords
- quantum coherence, energy transfer efficiency, light-harvesting antenna, photosynthetic reaction center, two-level system, quantum jumps, energetic disorder, localized excitations, exciton transfer
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