Nanowerk January 28, 2018
The main problem using nanomechanical resonators as information carriers is the realization of tunable phonon interaction at long distance. An international team of researchers (China, USA) reports the experimental observation of strong indirect coupling between separated mechanical resonators in a graphene-based electromechanical system. The coupling is mediated by a far-off-resonant phonon cavity through virtual excitations via a Raman-like process. By controlling the resonant frequency of the phonon cavity, the indirect coupling can be tuned in a wide range. The results may lead to the development of gate-controlled all-mechanical devices and open the possibility of long-distance quantum mechanical experiments… read more. Open Access TECHNICAL ARTICLE , Related article 1, 2
Schematic and scanning electron microscopy image of device architecture with a chain of three graphene-based nanomechanical resonators. (Image: USTC)