B800-B850 coherence correlates with energy transfer rates in the LH2 complex of photosynthetic purple bacteria

Cathal Smyth, Daniel G. Oblinsky, Gregory D. Scholes

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Until recently, no analytical measure of many-body delocalization in open systems had been developed, yet such a measure enables characterization of how molecular excitons delocalize in photosynthetic light-harvesting complexes, and in turn helps us understand quantum coherent aspects of electronic energy transfer. In this paper we apply these measures to a model peripheral light-harvesting complex, LH2 from Rhodopseudomonas acidophila. We find how many chromophores collectively contribute to the "delocalization length" of an excitation within LH2 and how the coherent delocalization is distributed spatially. We also investigate to what extent this delocalization length is effective, by examining the impact of bipartite and multipartite entanglement in inter-ring energy transfer in LH2.

Original languageEnglish (US)
Pages (from-to)30805-30816
Number of pages12
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number46
DOIs
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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