Parity-time symmetry: Unlocking faster and stronger optical signal processing

https://phys.org/news/2024-05-parity-symmetry-faster-stronger-optical.html

"combination of optical nonlinear effects, integrated photonics platforms, and high-intensity light field enables efficient nonlinear optical signal processing control... microresonator manipulating light using parity-time symmetry, employed to reduce power requirement, can boost efficiency without scarifying speed, using coupled microresonator system, 1 microresonator half length of other.... high-speed data processing >38 Gb/s, intrinsic linewidths as narrow as 1 GHz... 2 orders magnitude improved efficiency"