Creating an ultrafast optoelectronic switch using a Bose-Einstein condensate of polaritons

https://phys.org/news/2022-09-ultrafast-optoelectronic-bose-einstein-condensate-polaritons.html

"zinc oxide microcavities. Firing ultraviolet pump pulse for femtoseconds resulted in light from Bose-Einstein condensate... turning off laser resulted in turning off light 1,000 times faster... fast extinction rate of polariton population... rate for this new device was found to be several orders of magnitude better than other polariton switches that have been developed thus far: Good enough to put devices using such a switch in the terahertz range"