Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 105, Issue 25, Pages 8525-8530Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0802926105
Keywords
exciton transport; femtosecond spectroscopy; photosynthesis; light harvesting
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Funding
- NIGMS NIH HHS [R01 GM059230, GM59230] Funding Source: Medline
- Direct For Mathematical & Physical Scien [0745892] Funding Source: National Science Foundation
- Division Of Chemistry [0745892] Funding Source: National Science Foundation
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A simulation study demonstrates how the nonlinear optical response of the Fenna-Matthews-Olson photosynthetic light-harvesting complex may be explored by a sequence of laser pulses specifically designed to probe the correlated dynamics of double excitations. Cross peaks in the 2D correlation plots of the spectra reveal projections of the double-exciton wavefunctions onto a basis of direct products of single excitons. An alternative physical interpretation of these signals in terms of quasiparticle scattering is developed.
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