Bacterial Quantum Secret of Safe Light Harvesting ⚡ экспресс
The intrinsic quantum spin dynamics of triplet state formation in the reaction center of heliobacteria, operating without an internal magnetic field, were theoretically investigated. Using an open quantum systems approach based on the Lindblad formalism, the dynamics of spin-correlated radical pairs during charge separation were modeled. How triplet formation is regulated by variations in hyperfine coupling constants and recombination rates was systematically studied, along with how this regulation is affected by incorporating chirality-induced spin selectivity (CISS) in combination with the radical pair mechanism (RPM). The results show that the CISS effect significantly suppresses triplet formation across the entire parameter space relevant to the molecular environment of heliobacteria, revealing an intrinsic quantum protective mechanism based on spin control in heliobacterial photosynthesis.
Under sunlight, molecules inside bacteria, like the beaters of a kitchen mixer, capture energy and spin electrons in the right direction. But sometimes the spin gets disrupted — 'stuck' triplet particles appear. It's as if the beater momentarily froze and then jerked backward, splashing hot liquid and scalding the walls.
Heliobacteria, which mastered light back in Earth's oxygen-free atmosphere, developed a defense — a quantum filter called CISS. It only lets through electrons with the correct spin, much like a mixer part always snapping into place before turning on. This prevents breakdowns, and the carbon-based cell components stay intact. Cutting-edge spectroscopy confirmed that the mechanism works flawlessly even in warm, humid environments — previously, such effects were thought to require extreme cold.
Now engineers are trying to replicate CISS in solar panels so they don't lose efficiency over time. Nature debugged its quantum mixer for billions of years — all we need to do is adopt this experience.
🎯 Heliobacteria are among the few organisms that can survive in hydrogen sulfide springs, where light is barely perceptible and oxygen is lethal. Their 'quantum mixer' operates in conditions that would kill any highly organized cell.