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Observing polarization patterns in the collective motion of nanomechanical arrays

MPS-Authors

Shah,  Tirth
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander University Erlangen-Nürnberg (FAU), Department of Physics;

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Fösel,  Thomas
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander University Erlangen-Nürnberg (FAU), Department of Physics;

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Marquardt,  Florian
Marquardt Division, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander University Erlangen-Nürnberg (FAU), Department of Physics;

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Fulltext (public)

2109.08447.pdf
(Any fulltext), 12MB

Supplementary Material (public)

2021_Observing_polarization.png
(Supplementary material), 82KB

Citation

Doster, J., Shah, T., Fösel, T., Marquardt, F., & Weig, E. (2021). Observing polarization patterns in the collective motion of nanomechanical arrays. arXiv, 2109.08447.


Cite as: http://hdl.handle.net/21.11116/0000-0009-4240-4
Abstract
In recent years, nanomechanics has evolved into a mature field, with wide-ranging impact from sensing applications to fundamental physics, and it has now reached a stage which enables the fabrication and study of ever more elaborate devices. This has led to the emergence of arrays of coupled nanomechanical resonators as a promising field of research, serving as model systems to study collective dynamical phenomena such as synchronization or topological transport. From a general point of view, the arrays investigated so far represent scalar fields on a lattice. Moving to a scenario where these could be extended to vector fields would unlock a whole host of conceptually interesting additional phenomena, including the physics of polarization patterns in wave fields and their associated topology. Here we introduce a new platform, a two-dimensional array of coupled nanomechanical pillar resonators, whose orthogonal vibration directions encode a mechanical polarization degree of freedom. We demonstrate direct optical imaging of the collective dynamics, enabling us to analyze the emerging polarization patterns and follow their evolution with drive frequency.