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Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes

Author

Listed:
  • Fan Wu

    (Lund University)

  • Daniel Finkelstein-Shapiro

    (Lund University
    Universidad Nacional Autónoma de México)

  • Mao Wang

    (University of Gothenburg)

  • Ilmari Rosenkampff

    (Lund University)

  • Arkady Yartsev

    (Lund University)

  • Torbjörn Pascher

    (Lund University)

  • Tu C. Nguyen- Phan

    (University of Glasgow)

  • Richard Cogdell

    (University of Glasgow)

  • Karl Börjesson

    (University of Gothenburg)

  • Tönu Pullerits

    (Lund University)

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 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.

Suggested Citation

  • Fan Wu & Daniel Finkelstein-Shapiro & Mao Wang & Ilmari Rosenkampff & Arkady Yartsev & Torbjörn Pascher & Tu C. Nguyen- Phan & Richard Cogdell & Karl Börjesson & Tönu Pullerits, 2022. "Optical cavity-mediated exciton dynamics in photosynthetic light harvesting 2 complexes," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34613-x
    DOI: 10.1038/s41467-022-34613-x
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    References listed on IDEAS

    as
    1. Mao Wang & Manuel Hertzog & Karl Börjesson, 2021. "Polariton-assisted excitation energy channeling in organic heterojunctions," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    2. David M. Coles & Yanshen Yang & Yaya Wang & Richard T. Grant & Robert A. Taylor & Semion K. Saikin & Alán Aspuru-Guzik & David G. Lidzey & Joseph Kuo-Hsiang Tang & Jason M. Smith, 2014. "Strong coupling between chlorosomes of photosynthetic bacteria and a confined optical cavity mode," Nature Communications, Nature, vol. 5(1), pages 1-9, December.
    3. Kati Stranius & Manuel Hertzog & Karl Börjesson, 2018. "Selective manipulation of electronically excited states through strong light–matter interactions," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    4. Andrea B. Grafton & Adam D. Dunkelberger & Blake S. Simpkins & Johan F. Triana & Federico J. Hernández & Felipe Herrera & Jeffrey C. Owrutsky, 2021. "Excited-state vibration-polariton transitions and dynamics in nitroprusside," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
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    Cited by:

    1. Ilia Sokolovskii & Ruth H. Tichauer & Dmitry Morozov & Johannes Feist & Gerrit Groenhof, 2023. "Multi-scale molecular dynamics simulations of enhanced energy transfer in organic molecules under strong coupling," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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