Mysterious “quantum echo” in superconductors could unlock new tech

Researchers have discovered an unusual "quantum echo" in superconducting materials, dubbed the Higgs echo. This phenomenon arises from the interplay between Higgs modes and quasiparticles, producing distinctive signals unlike conventional echoes. By using precisely timed terahertz radiation pulses, the team revealed hidden quantum pathways that could be used to encode and retrieve information.