Weak signal enhancement by nonlinear resonance control in a forced nano-electromechanical resonator
Author
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Chowdhury, Avishek
Author
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Clerc, Marcel G.
Author
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Barbay, Jérémy
Author
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Robert-Philip, Isabelle
Author
dc.contributor.author
Braive, Remy
Admission date
dc.date.accessioned
2020-07-27T23:34:38Z
Available date
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2020-07-27T23:34:38Z
Publication date
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2020
Cita de ítem
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Nature Commuications (2020) 11:2400
es_ES
Identifier
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10.1038/s41467-020-15827-3
Identifier
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https://repositorio.uchile.cl/handle/2250/176150
Abstract
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Driven non-linear resonators can display sharp resonances or even multistable behaviours amenable to induce strong enhancements of weak signals. Such enhancements can make use of the phenomenon of vibrational resonance, whereby a weak low-frequency signal applied to a bistable resonator can be amplified by driving the non-linear oscillator with another appropriately-adjusted non-resonant high-frequency field. Here we demonstrate experimentally and theoretically a significant resonant enhancement of a weak signal by use of a vibrational force, yet in a monostable system consisting of a driven nano-electromechanical nonlinear resonator. The oscillator is subjected to a strong quasi-resonant drive and to two additional tones: a weak signal at lower frequency and a non-resonant driving at an intermediate frequency. We analyse this phenomenon in terms of coherent nonlinear resonance manipulation. Our results illustrate a general mechanism which might have applications in the fields of microwave signal amplification or sensing for instance. Designing efficient nonlinear dynamic resonances for weak signal amplification remains a challenge. Here, the authors demonstrate a resonance manipulation strategy able to enhance weak signals in a nonlinear oscillator consisting of an optically-probed driven nano-electromechanical resonator.
es_ES
Patrocinador
dc.description.sponsorship
French RENATECH network
European Union (EU)
European Union's Horizon 2020 research and innovation programme
732894
French National Research Agency (ANR)
ANR-19-CE240011-01
Millennium Institute for Research in Optics (MIRO)
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT
1180903