Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 124, Issue 42, Pages 9420-9427Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.0c08126
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Funding
- National Science Foundation [PHY -1914608]
- Center for Information Technology of the University of Groningen
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Optical spectroscopy is a powerful tool to interrogate quantum states of matter. We present simulation results for the cross-polarized two-dimensional electronic spectra of the light-harvesting system LH2 of purple bacteria. We identify a spectral feature on the diagonal, which we assign to ultrafast coherence transfer between degenerate states. The implication for the interpretation of previous experiments on different systems and the potential use of this feature are discussed. In particular, we foresee that this kind of feature will be useful for identifying mixed degenerate states and for identifying the origin of symmetry breaking disorder in systems like LH2. Furthermore, this may help identify both vibrational and electronic states in biological systems such as proteins and solid-state materials such as hybrid perovskites.
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