Topological phonon transport in an optomechanical system
Abstract
Light is a powerful tool for controlling mechanical motion, as shown by numerous applications in the field of cavity optomechanics. Recently, small scale optomechanical circuits, connecting a few optical and mechanical modes, have been demonstrated in an ongoing push towards multi-mode on-chip optomechanical systems. An ambitious goal driving this trend is to produce topologically protected phonon transport. Once realized, this will unlock the full toolbox of optomechanics for investigations of topological phononics. Here, we report the realization of topological phonon transport in an optomechanical device. Our experiment is based on an innovative multiscale optomechanical crystal design and allows for site-resolved measurements in an array of more than 800 cavities. The sensitivity inherent in our optomechanical read-out allowed us to detect thermal fluctuations traveling along topological edge channels. This represents a major step forward in an ongoing effort to downscale mechanical topological systems.
Additional Information
© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Received 17 June 2021; Accepted 24 May 2022; Published 17 June 2022. We 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 Union?s 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 Union?s Horizon 2020 Research and Innovation program under Grant No. 732894, Future and Emerging Technologies (FET)-Proactive Hybrid Optomechanical Technologies (HOT). Data availability: The data supporting the results presented in this article are available at Zenodo open-access repository under [https://doi.org/10.5281/zenodo.6414313]48. Additional data that support the findings of this study are available from the corresponding author (O.P.) upon reasonable request. Code availability: The code supporting the results presented in this article are available at Zenodo open-access repository under [https://doi.org/10.5281/zenodo.6414313]. These authors contributed equally: Hengjiang Ren, Tirth Shah. Contributions: H.R., T.S., C.B., F.M., V.P., and O.P. came up with the concept and planned the experiment. H.R., T.S., H.P., and C.B. performed the device design and fabrication. H.R. performed the measurements. H.R., T.S., F.M., V.P., and O.P. analyzed the data. All authors contributed to the writing of the manuscript.Attached Files
Published - s41467-022-30941-0.pdf
Submitted - 2009.06174.pdf
Supplemental Material - 41467_2022_30941_MOESM1_ESM.pdf
Supplemental Material - 41467_2022_30941_MOESM2_ESM.pdf
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Additional details
- PMCID
- PMC9205990
- Eprint ID
- 115240
- Resolver ID
- CaltechAUTHORS:20220622-390529700
- 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
- European Research Council (ERC)
- Created
-
2022-06-22Created from EPrint's datestamp field
- Updated
-
2023-06-06Created from EPrint's last_modified field
- Caltech groups
- AWS Center for Quantum Computing, Institute for Quantum Information and Matter, Kavli Nanoscience Institute