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Application of optical squeezing to microresonator based optical sensors

Dariya Salykina, Daniil Shakhbaziants, Igor Bilenko, Farid Khalili
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⚡ Quantum Brief
Russian researchers demonstrated a quantum-enhanced approach to optical sensing using high-Q microresonators, where squeezed light surpasses classical shot-noise limits for detecting environmental changes via evanescent field interactions. By injecting probe light in a squeezed quantum state, the team achieved sensitivity constrained only by optical losses and squeezing strength, enabling measurements beyond traditional quantum noise thresholds. The study reveals that internal microresonator losses can be mitigated by applying additional squeezing inside the cavity, further improving detection precision for minute frequency shifts caused by external perturbations. High-Q microresonators concentrate light in small volumes while their evanescent fields interact with surroundings, making them ideal for ultra-sensitive quantum sensors in fields like biomolecule detection or precision metrology. This work establishes a theoretical framework for optimizing quantum-enhanced optical sensors, with practical implications for next-generation devices where loss compensation and squeezing resources are critical performance factors.
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Quantum Physics arXiv:2511.12138 (quant-ph) [Submitted on 15 Nov 2025] Title:Application of optical squeezing to microresonator based optical sensors Authors:Dariya Salykina, Daniil Shakhbaziants, Igor Bilenko, Farid Khalili View a PDF of the paper titled Application of optical squeezing to microresonator based optical sensors, by Dariya Salykina and 3 other authors View PDF HTML (experimental) Abstract:High-Q optical microresonators combine low losses and high optical energy concentration in a small effective mode volume, making them an attractive platform for optical sensors. While light is confined in the microresonator by total internal reflection, a portion of the optical field, known as the evanescent field, extends outside. This makes the mode's resonant frequency sensitive to changes in the surrounding environment. In this work, we explore the quantum sensitivity limits of this type of sensors. We demonstrate that by preparing the probe light in a squeezed quantum state, it is possible to surpass the shot-noise limit. The resulting sensitivity is constrained only by optical losses and the available degree of squeezing. The influence of the losses can be reduced using additional squeezing of the light inside the microresonator. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2511.12138 [quant-ph] (or arXiv:2511.12138v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2511.12138 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Farid Ya. Khalili [view email] [v1] Sat, 15 Nov 2025 10:10:29 UTC (290 KB) Full-text links: Access Paper: View a PDF of the paper titled Application of optical squeezing to microresonator based optical sensors, by Dariya Salykina and 3 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2025-11 References & Citations INSPIRE HEP NASA ADSGoogle 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?) Links to Code Toggle Papers with Code (What is Papers with Code?) 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?)

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