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Published May 2021 | Version Published + Submitted
Book Section - Chapter Open

Topological phonon transport in an optomechanical system

Creators

Abstract

We report the observation of topological phonon transport within a multiscale optomechanical crystal structure consisting of an array of over 800 cavity-optomechanical elements. Using sensitive, spatially resolved optical read-out we detect thermal phonons in a 0.325 − 0.34 GHz band traveling along a topological edge channel, with substantial reduction in backscattering. This represents an important step from the pioneering macroscopic mechanical systems work towards topological phononic systems at the nanoscale.

Additional Information

© 2021 The Author(s). The authors would like to thank Sameer Sonar and Utku Hatipoglu for the help with nanofabrication and measurement. This work was supported by the Gordon and Betty Moore Foundation (award #7435) and the Kavli Nanoscience Institute at Caltech. H.R. was supported by the National Science Scholarship from A*STAR, Singapore. T.S. and F.M. acknowledge support from the European Unions Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 722923 (OMT). V.P. acknowledges support by the Julian Schwinger Foundation (Grant No. JSF-16-03-0000). F.M. acknowledges support from the European Unions Horizon 2020 Research and Innovation program under Grant No. 732894, Future and Emerging Technologies (FET)-Proactive Hybrid Optomechanical Technologies (HOT).

Attached Files

Published - Topological_phonon_transport_in_an_optomechanical_system.pdf

Submitted - 2009.06174.pdf

Files

2009.06174.pdf

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Additional details

Identifiers

Eprint ID
105384
Resolver ID
CaltechAUTHORS:20200915-092939162

Related works

Describes
https://arxiv.org/abs/2009.06174 (URL)
https://resolver.caltech.edu/CaltechAUTHORS:20220622-390529700 (URL)

Funding

Gordon and Betty Moore Foundation
7435
Kavli Nanoscience Institute
Agency for Science, Technology and Research (A*STAR)
Marie Curie Fellowship
722923
Julian Schwinger Foundation
JSF-16-03-0000
European Research Council (ERC)
732894

Dates

Created
2020-09-15
Created from EPrint's datestamp field
Updated
2022-06-22
Created from EPrint's last_modified field

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Caltech groups
Institute for Quantum Information and Matter , Kavli Nanoscience Institute