Can molecules stay quantum-synchronized at room temperature?

Gold nanoparticles arranged in flat sheets create gaps less than a nanometer wide, strong enough to force molecules on opposite sides to vibrate in lockstep — a form of quantum synchronization normally reserved for ultracold systems. Shining a laser on these arrays reveals spreading spatial coherence with no spectral narrowing or directed emission, a pattern that doesn't fit lasers, polariton condensates, or any known photonic state. It's a new phase of light-matter coupling that works on a benchtop, at room temperature.