Superfluorescence is a crystal’s synchronized exhale of light. Researchers just witnessed its mirror image: superabsorption, a coordinated inhale. They zapped cheap perovskite nanocrystals with laser pulses (spectroscopy) and saw a time-reversed absorption burst.

The trick? Fleeting internal distortions called polarons, which act as pacemakers to synchronize light-sensitive units. The event happens in a tenth of a trillionth of a second. No deep freeze needed: polarons impose order even at room temperature, unlike similar phenomena that require near-absolute-zero cooling. By adjusting the crystal size and adding carbon-based components, scientists tuned the effect to near-perfection, monitoring it with light measurement — essentially lowering entropy (disorder) against thermal chaos.

This paves the way for solar panels that drink in every photon, or detectors sensitive to single light particles.