Ultrafast optical-magnetic memory device

https://phys.org/news/2022-04-ultrafast-optical-magnetic-memory-device.html

"Magnetic random-access memory (MRAM) technology focuses on manipulating electron spin to deal with such glitch... data are written by switching direction nanomagnets... allows data to be saved in enduring manner when power is off, computers to boot faster, and consume less power... fastest stimuli commercially available to humankind to break nanosecond speed limitation, thousand times more energy efficient... world-record writing speed of 20 picoseconds (ps)"