Multi-functional THz metasurface array achieves high-speed optical logic processing and high-bandwidth PAM-4 signal modulation

https://www.eurekalert.org/news-releases/1135074

"wiring/ power pixel-level routing bottlenecks overcome using 6G nodes/ ultra-high-speed programmable optoelectronic data backplanes...  elevates multi-element subarray to minimum addressable control unit... periodically arranged aluminum gallium nitride/gallium nitride high-electron-mobility transistors altering 2D electron gas carrier density via gate voltage achieving 170 to 260 GHz broadband transmission modulation .. processes data at wavefront, up to 200 MHz Boolean operations... edge sensing"