Enhancing wave control with complex frequency excitations may revolutionize sensing, imaging and communication
https://www.eurekalert.org/news-releases/1079064 "less bulky/ complex, no need to add energy... tailoring excitation form, not materials themselves, emulates system gain/ loss, unlocking perfect absorption or super-resolution imaging, surpassing passivity limitations in wave-matter interactions... accesses non-Hermitian responses... designing excitations with amplitudes that exponentially grow or decay engaging natural resonances/ anti-resonances... dynamic light control, signal absorption/ amplification, directional wave transport, enhanced quantum state control"