title: Measures and implications of electronic coherence in photosynthetic light-harvesting.
abstract: We review various methods for measuring delocalization in light-harvesting complexes. Direct relations between inverse participation ratios (IPRs) and entanglement measures are derived. The B850 ring from the LH2 complex in Rhodopseudomonas acidophila is studied. By analysing electronic energy transfer dynamics in the B850 ring using different metrics for quantifying excitonic delocalization, we conclude that measures of entanglement are far more robust (in terms of time scale, temperature and level of decoherence) than IPRs, and are therefore more appropriate for the purpose of studying the time evolution of coherence in a system.
authors: Department of Physics, University of Toronto, 60 St George Street, Toronto, Ontario, M5S 1A7, Canada.
authors: Cathal
authors: C
authors: Smyth
authors: Francesca
authors: F
authors: Fassioli
authors: Gregory D
authors: GD
authors: Scholes
mesh_terms: D004735:Energy Transfer / Q000502:physiology* / Q000528:radiation effects; D008027:Light; D045342:Light-Harvesting Protein Complexes / Q000737:chemistry* / Q000502:physiology* / Q000528:radiation effects; D008954:Models, Biological; D008956:Models, Chemical; D010788:Photosynthesis / Q000502:physiology* / Q000528:radiation effects; D011789:Quantum Theory
chemical_list: D045342:Light-Harvesting Protein Complexes