Dirac plasmon polariton THz control enables faster communications and faster, smaller, and more efficient quantum devices

https://phys.org/news/2025-09-terahertz-faster-electronics.html

"light's wavelength not easily confined to small spaces, overcome by squeezing into tiny spaces 100X smaller than their natural wavelength so light can be confined/ guided in nanoscale devices... tiny strips topological insulator epitaxial Bi2Se3 arranged side by side with gaps between them adjusted to: shorten wavelengths 20%, extended attenuation length >50%... lowers momentum, retain energy longer... lightning-fast downloads, more secure networks, clearer, safer medical imaging, more powerful quantum computers"