Controlling materials’ functionality via narrowband tunable 1- to 20-THz light

https://www.laserfocusworld.com/lasers-sources/article/14301723/narrowband-tunable-terahertz-lasers-may-transform-materials-research-and-technology

"efficiently create metastable superconducting-like state in fullerene-based material K3C60, while reducing the pulse intensity by 100X... observed at room temperature for 100 ps, predicted lifetime >=0.5 ns... lattice vibration excitation coupled to electronic degrees freedom of system through electron phonon coupling... high-speed devices, exploring the effects of quantum tunneling under a laser drive"