A pulsed, helical laser to control other light signals, speeding up fiber-optic communication

https://ece.engin.umich.edu/stories/a-pulsed-helical-laser-to-control-other-light-signals-speeding-up-fiber-optic-communication

"light signals no longer need conversion to electrical signals for data processing before further transmission... laser strength increased 2 orders magnitude pulsing circularly polarized light through mirrored optical cavity lined with 2D semiconductor tungsten diselenide... XOR gate produces output signal when 1 light input twists clockwise/ other counterclockwise... low power... strong, oscillating light enlarges electronic bands (Stark effect) producing 210 Tesla pseudo-magnetic field... energy of different spins can be controlled"