Published May 2021
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Topological phonon transport in an optomechanical system
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
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2009.06174.pdf
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Additional details
- Eprint ID
- 105384
- Resolver ID
- CaltechAUTHORS:20200915-092939162
- 7435
- Gordon and Betty Moore Foundation
- Kavli Nanoscience Institute
- Agency for Science, Technology and Research (A*STAR)
- 722923
- Marie Curie Fellowship
- JSF-16-03-0000
- Julian Schwinger Foundation
- 732894
- European Research Council (ERC)
- Created
-
2020-09-15Created from EPrint's datestamp field
- Updated
-
2022-06-22Created from EPrint's last_modified field
- Caltech groups
- Institute for Quantum Information and Matter, Kavli Nanoscience Institute