期刊
NATURE PHYSICS
卷 9, 期 8, 页码 480-484出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS2665
关键词
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资金
- JSPS KAKENHI [23241046, 20246064]
- Grants-in-Aid for Scientific Research [23241046] Funding Source: KAKEN
Coupled nanomechanical resonators have recently attracted great attention for both practical applications and fundamental studies owing to their sensitive sympathetic oscillation dynamics(1-10). A challenge to the further development of this architecture is the coherent manipulation of the coupled oscillations. Here, we demonstrate strong dynamic coupling between two GaAs-based mechanical resonators by periodically modulating (pumping) the stress using a piezoelectric transducer. This strong coupling enables coherent transfer of phonon populations between the resonators, namely phonon Rabi oscillations(11-13). The nature of the dynamic coupling can also be tuned from a linear first-order interaction to a nonlinear higher-order process in which more than one pump phonon mediates the coherent oscillations (that is, multi-pump phonon mixing). This coherent manipulation is not only useful for controlling classical oscillations(14) but can also be extended to the quantum regime(11-13), opening up the prospect of entangling two distinct macroscopic mechanical objects(15,16).
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