Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes
(2022) In Nature Communications 13(1).- Abstract
Strong light-matter interaction leads to the formation of hybrid polariton states and alters the photophysical dynamics of organic materials and biological systems without modifying their chemical structure. Here, we experimentally investigated a well-known photosynthetic protein, light harvesting 2 complexes (LH2) from purple bacteria under strong coupling with the light mode of a Fabry-Perot optical microcavity. Using femtosecond pump probe spectroscopy, we analyzed the polariton dynamics of the strongly coupled system and observed a significant prolongation of the excited state lifetime compared with the bare exciton, which can be explained in terms of the exciton reservoir model. Our findings indicate the potential of tuning the... (More)
Strong light-matter interaction leads to the formation of hybrid polariton states and alters the photophysical dynamics of organic materials and biological systems without modifying their chemical structure. Here, we experimentally investigated a well-known photosynthetic protein, light harvesting 2 complexes (LH2) from purple bacteria under strong coupling with the light mode of a Fabry-Perot optical microcavity. Using femtosecond pump probe spectroscopy, we analyzed the polariton dynamics of the strongly coupled system and observed a significant prolongation of the excited state lifetime compared with the bare exciton, which can be explained in terms of the exciton reservoir model. Our findings indicate the potential of tuning the dynamic of the whole photosynthetic unit, which contains several light harvesting complexes and reaction centers, with the help of strong exciton-photon coupling, and opening the discussion about possible design strategies of artificial photosynthetic devices.
(Less)
- author
- Wu, Fan LU ; Finkelstein-Shapiro, Daniel LU ; Wang, Mao ; Rosenkampff, Ilmari LU ; Yartsev, Arkady LU ; Pascher, Torbjörn LU ; Nguyen- Phan, Tu C. ; Cogdell, Richard ; Börjesson, Karl and Pullerits, Tönu LU
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Communications
- volume
- 13
- issue
- 1
- article number
- 6864
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:36369202
- scopus:85141680238
- ISSN
- 2041-1723
- DOI
- 10.1038/s41467-022-34613-x
- language
- English
- LU publication?
- yes
- id
- 8e0759f5-0be0-4a92-9692-b7d5bb5f290e
- date added to LUP
- 2022-12-05 10:59:36
- date last changed
- 2024-09-21 05:21:00
@article{8e0759f5-0be0-4a92-9692-b7d5bb5f290e, abstract = {{<p>Strong light-matter interaction leads to the formation of hybrid polariton states and alters the photophysical dynamics of organic materials and biological systems without modifying their chemical structure. Here, we experimentally investigated a well-known photosynthetic protein, light harvesting 2 complexes (LH2) from purple bacteria under strong coupling with the light mode of a Fabry-Perot optical microcavity. Using femtosecond pump probe spectroscopy, we analyzed the polariton dynamics of the strongly coupled system and observed a significant prolongation of the excited state lifetime compared with the bare exciton, which can be explained in terms of the exciton reservoir model. Our findings indicate the potential of tuning the dynamic of the whole photosynthetic unit, which contains several light harvesting complexes and reaction centers, with the help of strong exciton-photon coupling, and opening the discussion about possible design strategies of artificial photosynthetic devices.</p>}}, author = {{Wu, Fan and Finkelstein-Shapiro, Daniel and Wang, Mao and Rosenkampff, Ilmari and Yartsev, Arkady and Pascher, Torbjörn and Nguyen- Phan, Tu C. and Cogdell, Richard and Börjesson, Karl and Pullerits, Tönu}}, issn = {{2041-1723}}, language = {{eng}}, number = {{1}}, publisher = {{Nature Publishing Group}}, series = {{Nature Communications}}, title = {{Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes}}, url = {{http://dx.doi.org/10.1038/s41467-022-34613-x}}, doi = {{10.1038/s41467-022-34613-x}}, volume = {{13}}, year = {{2022}}, }