Fluxon phase- locked array of 100 oscillators on single superconducting chip precisely generates/ controls THz
https://phys.org/news/2026-03-superconducting-chip-generates-tunable-terahertz.html "THz sources bulky/ power-hungry, or operate only at fixed frequencies, overcome using Josephson junctions converting DC voltage to high-frequency magnetic flux packets sent at relativistic speed through superconducting loop, with output frequency directly proportional to applied voltage, tuning THz output from 0.3 to 1.5 THz... output power orders magnitude higher... no external lasers/ vacuum tubes... entirely solid-state/ fits on chip smaller than fingernail... clean/ stable signal, cryogenic temperatures"