Japanese physicists at the University of Tokyo have developed a quantum glass that traps light for over an hour using a photonic crystal and electromagnetically induced transparency (EIT).

This breakthrough, which preserves quantum information in photons without decay, enables hour-long storage of entangled photons, paving the way for reliable optical RAM in quantum computing, unhackable quantum internet, and deep-space data storage.

This surpasses previous millisecond-scale photon storage, marking a significant leap in photonics and quantum technology.