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  • Lim, James, et al. (author)
  • Vibronic origin of long-lived coherence in an artificial molecular light harvester.
  • 2015
  • In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 6
  • Journal article (peer-reviewed)abstract
    • Natural and artificial light-harvesting processes have recently gained new interest. Signatures of long-lasting coherence in spectroscopic signals of biological systems have been repeatedly observed, albeit their origin is a matter of ongoing debate, as it is unclear how the loss of coherence due to interaction with the noisy environments in such systems is averted. Here we report experimental and theoretical verification of coherent exciton-vibrational (vibronic) coupling as the origin of long-lasting coherence in an artificial light harvester, a molecular J-aggregate. In this macroscopically aligned tubular system, polarization-controlled 2D spectroscopy delivers an uncongested and specific optical response as an ideal foundation for an in-depth theoretical description. We derive analytical expressions that show under which general conditions vibronic coupling leads to prolonged excited-state coherence.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Zigmantas, Donatas (1)
Paleček, David (1)
Hauer, Jürgen (1)
Lim, James (1)
Caycedo-Soler, Felip ... (1)
Lincoln, Craig N (1)
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Prior, Javier (1)
von Berlepsch, Hans (1)
Huelga, Susana F (1)
Plenio, Martin B (1)
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University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2015 (1)

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