MERLIN SCIENCE — Quantum Coherence Drives Near-Unity Photosynthetic Energy Transfer Eff — E8 Intelligence Research

The finding, in one clean sentence, is this: photosynthetic energy transfer achieves near-unity efficiency because quantum coherence, not classical hopping, drives the exciton from antenna to reaction center. We have direct experimental evidence — quantum beats in the FMO complex lasting between one hundred and six hundred femtoseconds, with vibronic modes at two hundred to four hundred wavenumbers — and the efficiency sits above ninety-five percent at room temperature. That is not noise. That is a mechanism. Let me give you the field context. For decades, we assumed biological energy transport was a classical random walk, with losses at every step. The data says otherwise. The exciton Hamiltonian is straightforward: site energies on the diagonal, couplings off-diagonal, and when you diagonalize it, you get delocalized states spanning two to three chromophores. That delocalization is the coherence. The vibronic coupling — the overlap between electronic and nuclear motion — sustains it Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com