Back to Search
Start Over
Sound non-reciprocity based on synthetic magnetism.
- Source :
-
Science Bulletin . Oct2023, Vol. 68 Issue 19, p2164-2169. 6p. - Publication Year :
- 2023
-
Abstract
- Synthetic magnetism has been recently realized using spatiotemporal modulation patterns, producing non-reciprocal steering of charge-neutral particles such as photons and phonons. Here, we design and experimentally demonstrate a non-reciprocal acoustic system composed of three compact cavities interlinked with both dynamic and static couplings, in which phase-correlated modulations induce a synthetic magnetic flux that breaks time-reversal symmetry. Within the rotating wave approximation, the transport properties of the system are controlled to efficiently realize large non-reciprocal acoustic transport. By optimizing the coupling strengths and modulation phases, we achieve frequency-preserved unidirectional transport with 45-dB isolation ratio and 0.85 forward transmission. Our results open to the realization of acoustic non-reciprocal technologies with high efficiency and large isolation, and offer a route towards Floquet topological insulators for sound. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20959273
- Volume :
- 68
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 172976149
- Full Text :
- https://doi.org/10.1016/j.scib.2023.08.013