Scientists have achieved a major breakthrough in quantum physics by showing that individual molecules attached to a surface can preserve their delicate quantum properties at the ultimate physical limit. The discovery solves a long-standing challenge in molecular quantum research and could open new possibilities for controlling matter at the smallest scales. The research was conducted by scientists at the Max Planck Institute for the Science of Light (MPL). Their work, published in the journal Science in 2026, demonstrates that molecules placed on an exceptionally clean crystal surface can maintain their optical coherence for as long as fundamental physics allows. This achievement could help researchers develop more precise quantum devices, improve their understanding of molecular behavior, and explore new ways to control individual molecules using advanced microscopy techniques. Why Are Scientists Interested in Quantum Molecules? Quantum physics describes how matter and energy behave ...