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Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field

Gloppe, A.; Verlot, P.; Dupont-Ferrier, E.; Siria, A.; Poncharal, P.; Bachelier, G.; Vincent, P.; Arcizet, O.

Authors

A. Gloppe

PIERRE VERLOT Pierre.Verlot@nottingham.ac.uk
Assistant Professor of Experimentalquantum Physics/Technology

E. Dupont-Ferrier

A. Siria

P. Poncharal

G. Bachelier

P. Vincent

O. Arcizet



Contributors

Abstract

Optomechanics, which explores the fundamental coupling between light and mechanical motion, has made important advances in manipulating macroscopic mechanical oscillators down to the quantum level. However, dynamical effects related to the vectorial nature of the optomechanical interaction remain to be investigated. Here we study a nanowire with subwavelength dimensions coupled strongly to a tightly focused beam of light, enabling an ultrasensitive readout of the nanoresonator dynamics. We determine experimentally the vectorial structure of the optomechanical interaction and demonstrate that a bidimensional dynamical backaction governs the nanowire dynamics. Moreover, the spatial topology of the optomechanical interaction is responsible for novel canonical signatures of strong coupling between mechanical modes, which leads to a topological instability that underlies the non-conservative nature of the optomechanical interaction. These results have a universal character and illustrate the increased sensitivity of nanomechanical devices towards spatially varying interactions, opening fundamental perspectives in nanomechanics, optomechanics, ultrasensitive scanning force microscopy and nano-optics.

Journal Article Type Article
Publication Date 2014-11
Journal Nature Nanotechnology
Print ISSN 1748-3387
Electronic ISSN 1748-3395
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 9
Issue 11
Pages 920-926
APA6 Citation Gloppe, A., Verlot, P., Dupont-Ferrier, E., Siria, A., Poncharal, P., Bachelier, G., …Arcizet, O. (2014). Bidimensional nano-optomechanics and topological backaction in a non-conservative radiation force field. Nature Nanotechnology, 9(11), 920-926. doi:10.1038/nnano.2014.189
DOI https://doi.org/10.1038/nnano.2014.189
Publisher URL https://www.nature.com/articles/nnano.2014.189
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