Phonon condensation and cooling via nonlinear feedback

[2201.00251] Phonon condensation and cooling via nonlinear feedback Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Physics > Applied Physics arXiv:2201.00251 (physics) [Submitted on 1 Jan 2022 ( v1 ), last revised 11 Apr 2026 (this version, v2)] Title: Phonon condensation and cooling via nonlinear feedback Authors: Xu Zheng , Baowen Li View a PDF of the paper titled Phonon condensation and cooling via nonlinear feedback, by Xu Zheng and Baowen Li View PDF HTML (experimental) Abstract: We propose a method to control the energy distribution in multimode mechanical systems using a single nonlinear feedback loop. We demonstrate that this feedback mechanism simultaneously amplifies the fundamental vibrational mode while suppressing all higher-order modes, effectively channeling energy into the lowest-frequency mode. This process mimics the energy redistribution of Fröhlich condensation but is achieved here through a designed feedback force that combines a ``low-pass gain'' and a ``high-pass loss''. In the feedback-induced steady state, the fundamental mode exhibits a phase-space distribution similar to that of a phonon laser, characterized by a ring shape and amplitude squeezing. Additionally, we show that the linewidth of the fundamental mode is narrowed by an order of magnitude, corresponding to a significant enhancement in phase coherence. This scheme offers a robust approach to generating coherent mechanical states and phonon lasing without the need for optical gain media or intrinsic material nonlinearities. Comments: 9 pages, 4 figures Subjects: Applied Physics (physics.app-ph) Cite as: arXiv:2201.00251 [physics.app-ph] (or arXiv:2201.00251v2 [physics.app-ph] for this version) https://doi.org/10.48550/arXiv.2201.00251 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Xu Zheng [ view email ] [v1] Sat, 1 Jan 2022 22:53:48 UTC (385 KB) [v2] Sat, 11 Apr 2026 08:06:28 UTC (274 KB) Full-text links: Access Paper: View a PDF of the paper titled Phonon condensation and cooling via nonlinear feedback, by Xu Zheng and Baowen Li View PDF HTML (experimental) TeX Source view license Current browse context: physics.app-ph < prev | next > new | recent | 2022-01 Change to browse by: physics References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from

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