Time-reversal Interferometry Using Cat States with Scalable Entangling Resources
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Quantum Physics arXiv:2602.06308 (quant-ph) [Submitted on 6 Feb 2026] Title:Time-reversal Interferometry Using Cat States with Scalable Entangling Resources Authors:Sebastián C. Carrasco, Michael H. Goerz, Zeyang Li, Simone Colombo, Vladan Vuletic, Wolfgang P. Schleich, Vladimir S. Malinovsky View a PDF of the paper titled Time-reversal Interferometry Using Cat States with Scalable Entangling Resources, by Sebasti\'an C. Carrasco and 6 other authors View PDF Abstract:We propose a novel method for generating Schrödinger-cat states -- defined as equal superpositions of arbitrary coherent states -- using a concise sequence of rapid twist-and-turn pulses. We demonstrate that the required shearing strength for the protocol, which scales linearly with time, decreases with increasing number of atoms ($N$) in proportion to $1/\sqrt{N}$. The resulting states exhibit optimal quantum Fisher information, making them ideal for surpassing the classical limit of phase sensitivity in quantum metrology applications. Notably, our protocol is compatible with a time-reversal strategy for quantum metrology, ensuring its practical viability. Furthermore, we demonstrate that the Heisenberg limit scaling remains intact even when reducing the twisting employed in tandem with the number of atoms, thereby mitigating realistic losses such as photon scattering. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.06308 [quant-ph] (or arXiv:2602.06308v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.06308 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Sebastián Carrasco [view email] [v1] Fri, 6 Feb 2026 02:02:29 UTC (12,268 KB) Full-text links: Access Paper: View a PDF of the paper titled Time-reversal Interferometry Using Cat States with Scalable Entangling Resources, by Sebasti\'an C. Carrasco and 6 other authorsView PDFTeX Source view license Current browse context: quant-ph new | recent | 2026-02 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?)