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Cited by 269

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Direct evidence of quantum transport in photosynthetic light-harvesting complexes

Open access
Panitchayangkoon, Gitt, Voronine, Dmitri V., Abramavicius, Darius, Caram, Justin R., Lewis, Nicholas H. C., Mukamel, Shaul, Engel, Gregory S.·2011·Proceedings of the National Academy of Sciences

Abstract

The photosynthetic light-harvesting apparatus moves energy from absorbed photons to the reaction center with remarkable quantum efficiency. Recently, long-lived quantum coherence has been proposed to influence efficiency and robustness of photosynthetic energy transfer in light-harvesting antennae. The quantum aspect of these dynamics has generated great interest both because of the possibility for efficient long-range energy transfer and because biology is typically considered to operate entirely in the classical regime. Yet, experiments to date show only that coherence persists long enough that it can influence dynamics, but they have not directly shown that coherence does influence energy transfer. Here, we provide experimental evidence that interaction between the bacteriochlorophyll chromophores and the protein environment surrounding them not only prolongs quantum coherence, but also spawns reversible, oscillatory energy transfer among excited states. Using two-dimensional electronic spectroscopy, we observe oscillatory excited-state populations demonstrating that quantum transport of energy occurs in biological systems. The observed population oscillation suggests that these light-harvesting antennae trade energy reversibly between the protein and the chromophores. Resolving design principles evident in this biological antenna could provide inspiration for new solar energy applications.

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Crossref · 10.1073/pnas.1105234108

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Metadata

Authors
Panitchayangkoon, G., Voronine, D. V., Abramavicius, D., Caram, J. R., Lewis, N. H. C., Mukamel, S., & Engel, G. S.
Venue
Proceedings of the National Academy of Sciences
Published
2011-12-13
Volume
108
Issue
52
Pages
20908-20912
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2020723378
Cited by
269
References
27
FWCI
12.69
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Direct evidence of quantum transport in photosynthetic light-harvesting complexes. https://app.cochat.ai/papers/10.1073/pnas.1105234108
The paper
Panitchayangkoon, G., Voronine, D. V., Abramavicius, D., Caram, J. R., Lewis, N. H. C., Mukamel, S., & Engel, G. S. (2011). Direct evidence of quantum transport in photosynthetic light-harvesting complexes. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1105234108

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