Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4945741
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Funding
- ERC Advanced Grant (QuREM)
- Marie Curie Initial Training Network for Cavity Quantum Optomechanics (cQOM)
- MEXT KAKENHI [15H05869, 15K21727]
- European Commission through a Marie Sklodowska-Curie Fellowship (IIF Project) [331985]
- Grants-in-Aid for Scientific Research [15K21727, 15H05869] Funding Source: KAKEN
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We study a classical K-type three-level system based on three high-Q micromechanical beam resonators embedded in a gradient electric field. By modulating the strength of the field at the difference frequency between adjacent beam modes, we realize strong dynamic two-mode coupling, via the dielectric force. Driving adjacent pairs simultaneously, we observe the formation of a purely mechanical dark state and an all-phononic analog of coherent population trapping-signatures of strong three-mode coupling. The K-type micromechanical system is a natural extension of previously demonstrated two-level micromechanical systems and adds to the toolbox for engineering of all-phononic micromechanical circuits and arrays. (C) 2016 AIP Publishing LLC.
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