Quantum coherence in photosynthesis for efficient solar-energy conversion. Vibronic coherence in oxygenic photosynthesis. Two-dimensional electronic spectroscopy with double modulation lock-in detection: enhancement of sensitivity and noise resistance. Vibrational beatings conceal evidence of electronic coherence in the FMO light-harvesting complex. Electronic resonance with anticorrelated pigment vibrations drives photosynthetic energy transfer outside the adiabatic framework. Origin of long-lived coherences in light-harvesting complexes. A density functional normal mode calculation of a bacteriochlorophyll a derivative. Demonstration and interpretation of significant asymmetry in the low-resolution and high-resolution Qy fluorescence and absorption spectra of bacteriochlorophyll a. Electronphonon and vibronic couplings in the FMO bacteriochlorophyll a antenna complex studied by difference fluorescence line narrowing. Coherent wavepackets in the Fenna–Matthews–Olson complex are robust to excitonic-structure perturbations caused by mutagenesis. Atomistic study of the long-lived quantum coherences in the Fenna–Matthews–Olson complex. Quest for spatially correlated fluctuations in the FMO light-harvesting complex. Coherence dynamics in photosynthesis: protein protection of excitonic coherence. Electron-vibrational coupling in the Fenna–Matthews–Olson complex of Prosthecochloris aestuarii determined by temperature-dependent absorption and fluorescence line-narrowing measurements. Quantum coherence spectroscopy reveals complex dynamics in bacterial light-harvesting complex 2 (LH2). Elucidation of the timescales and origins of quantum electronic coherence in LHCII. Coherently wired light-harvesting in photosynthetic marine algae at ambient temperature. Oscillating anisotropies in a bacteriochlorophyll protein: evidence for quantum beating between exciton levels. Long-lived quantum coherence in photosynthetic complexes at physiological temperature. Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems. Excited state dynamics in FMO antenna complexes from photosynthetic green sulfur bacteria: a kinetic model. Exciton structure and energy transfer in the Fenna–Matthews–Olson complex. Two-dimensional femtosecond spectroscopy. Toward level-to-level energy transfers in photosynthesis: the Fenna–Matthews–Olson protein. Ultrafast energy transfer in FMO trimers from the green bacterium Chlorobium tepidum. How proteins trigger excitation energy transfer in the FMO complex of green sulfur bacteria. Exciton analysis in 2D electronic spectroscopy. Two-dimensional spectroscopy of electronic couplings in photosynthesis. Exciton simulations of optical spectra of the FMO complex from the green sulfur bacterium Chlorobium tepidum at 6 K. Evolution of photosystem I-from symmetry through pseudosymmetry to asymmetry. The structural basis for the difference in absorbance spectra for the FMO antenna protein from various green sulfur bacteria. In situ mapping of the energy flow through the entire photosynthetic apparatus. The reaction center of green sulfur bacteria. Chlorophyll arrangement in a bacteriochlorophyll protein from Chlorobium limicola. Lessons from nature about solar light harvesting. The architecture and function of the light-harvesting apparatus of purple bacteria: from single molecules to in vivo membranes. The presence of such states suggests that vibronic coupling is relevant for photosynthetic energy transfer.Ĭogdell, R. We further find that specific vibrational coherences are produced via vibronically coupled excited states. We show that the long-lived QBs are exclusively vibrational in origin, whereas the dephasing of the electronic coherences is completed within 240 fs even at 77 K. Here we revisit the coherence dynamics of the FMO complex using polarization-controlled two-dimensional electronic spectroscopy, supported by theoretical modelling. Although it has been pointed out that vibrational motion produces similar spectral signatures, a concrete assignment of these oscillatory signals to distinct physical processes is still lacking. These were assigned to superpositions of excitonic states, a controversial interpretation, as the strong chromophore–environment interactions in the complex suggest fast dephasing. The idea that excitonic (electronic) coherences are of fundamental importance to natural photosynthesis gained popularity when slowly dephasing quantum beats (QBs) were observed in the two-dimensional electronic spectra of the Fenna–Matthews–Olson (FMO) complex at 77 K.
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