Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement
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Quantum Physics arXiv:2601.22503 (quant-ph) [Submitted on 30 Jan 2026] Title:Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement Authors:Guantian Hu, Wenxuan Zhang, Zhihua Chen, Liuzhu Zhong, Jingchao Zhao, Chilong Liu, Zixing Liu, Yue Xu, Yongchang Lin, Yougui Ri, Guixu Xie, Mingze Liu, Haolan Yuan, Yuxuan Zhou, Yu Zhang, Chang-Kang Hu, Song Liu, Dian Tan, Dapeng Yu View a PDF of the paper titled Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement, by Guantian Hu and 18 other authors View PDF HTML (experimental) Abstract:Quantum sensing leverages quantum resources to surpass the standard quantum limit, yet many existing protocols rely on the preparation of complex entangled states and Hamiltonian engineering, posing challenges for universality and scalability. Here, we report an experimental realization of a universal protocol, known as Butterfly Metrology, proposed in [arXiv:2411.12794], demonstrating a scrambling-based approach for quantum-enhanced sensing on a superconducting quantum processor. By exploiting many-body information scrambling, we observe quantum-enhanced sensitivity to an encoded phase beyond the standard quantum limit, with a scaling consistent with a factor-of-two of the Heisenberg limit for system sizes of up to 10 qubits. Importantly, we experimentally establish a connection between the enhanced sensitivity and the dynamics of the out-of-time-order correlator (OTOC), and show that the buildup of scrambling-induced genuine multipartite entanglement underlies the observed sensitivity enhancement. Our results demonstrate a scalable and practical approach for quantum-enhanced sensing in interacting many-body quantum systems. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2601.22503 [quant-ph] (or arXiv:2601.22503v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2601.22503 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Dian Tan [view email] [v1] Fri, 30 Jan 2026 03:28:36 UTC (9,637 KB) Full-text links: Access Paper: View a PDF of the paper titled Quantum-Enhanced Sensing Enabled by Scrambling-Induced Genuine Multipartite Entanglement, by Guantian Hu and 18 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-01 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?)