ArticlePhysical chemistry chemical physics : PCCP2019
Delocalized excitons and interaction effects in extremely dilute thermal ensembles.
Article in Physical chemistry chemical physics : PCCP, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- High-resolution two-dimensional electronic spectroscopy reveals the homogeneous line profile of chromophores solvated in nanoclusters.Nature communications · 2022Article
- Rapid multiple-quantum three-dimensional fluorescence spectroscopy disentangles quantum pathways.Nature communications · 2019Article
- Before Förster. Initial excitation in photosynthetic light harvesting.Chemical science · 2019Article
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9 authors.
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Abstract
Long-range interparticle interactions are revealed in extremely dilute thermal atomic ensembles using highly sensitive nonlinear femtosecond spectroscopy. Delocalized excitons are detected in the atomic systems at particle densities where the mean interatomic distance (>10 μm) is much greater than the laser wavelength and multi-particle coherences should destructively interfere over the ensemble average. With a combined experimental and theoretical analysis, we identify an effective interaction mechanism, presumably of dipolar nature, as the origin of the excitonic signals. Our study implies that even in highly-dilute thermal atom ensembles, significant transition dipole-dipole interaction networks may form that require advanced modeling beyond the nearest neighbor approximation to quantitatively capture the details of their many-body properties.
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