Surface acoustic wave propagation phenomenon to help advance classical and quantum communication using acoustic devices

https://www.eurekalert.org/news-releases/1071999 

"convert electrical signals into vibrations/ ripples through piezoelectric effect, enabling efficient signal processing... nanoscale magnetic material periodic array that waves go through, creates asymmetrical diffraction phenomenon (nonreciprocal diffraction) previously observed only in optics, arising from interaction with magnetic materials specifically related to angular momenta... enables precise control of propagation paths using magnetic fields... mobile phones"