Superradiance at the localization-delocalization crossover in tubular chlorosomes
arXiv:1601.04728 · doi:10.1103/PhysRevE.93.022414
Abstract
We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural studies, we analyze excitonic localization and spectral statistics of the chlorosomes. A size-dependent localization-delocalization crossover is found to occur as a function of the excitonic energy. The crossover energy region coincides with the more optically active states with maximized superradiance, and is, consequently, more conducive for energy transfer.
8 pages, 5 figures
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- Analogue quantum simulation of superradiance and subradiance in trapped-ions