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  Multimode cold-damping optomechanics with delayed feedback

Sommer, C., Ghosh, A., & Genes, C. (2020). Multimode cold-damping optomechanics with delayed feedback. Physical Review Research, 2: 033299. doi:10.1103/PhysRevResearch.2.033299.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-919C-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-F169-4
Genre: Journal Article

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PhysRevResearch.2.033299.pdf (Publisher version), 2MB
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

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 Creators:
Sommer, Christian1, Author              
Ghosh, Alekhya1, Author
Genes, Claudiu1, Author              
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1Genes Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, Staudtstraße 2, 91058 Erlangen, DE, ou_2541694              

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 Abstract: We investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown by C. Sommer and C. Genes [Phys. Rev. Lett. 123, 203605 (2019)] that a single feedback loop is sufficient to simultaneously remove thermal noise from many mechanical modes. While the intrinsic delayed response of the electronics can induce single-mode and mutual heating between adjacent modes, we propose to counteract such detrimental effects by introducing an additional time delay to the feedback loop. For lossy cavities and broadband feedback, we derive analytical results for the final occupancies of the mechanical modes within the formalism of quantum Langevin equations. For modes that are frequency degenerate collective effects dominate, mimicking behavior similar to Dicke super- and subradiance. These analytical results, corroborated with numerical simulations of both transient and steady state dynamics, allow us to find suitable conditions and strategies for efficient single-mode or multimode feedback optomechanics.

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Language(s): eng - English
 Dates: 2020-06-152020-08-25
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevResearch.2.033299
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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 2 Sequence Number: 033299 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564