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Optimized Slice-Phase Control of Mirror Pulse in Cold-Atom Interferometry with Finite Response Time

arXiv Quantum Physics
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⚡ Quantum Brief
Chinese researchers developed a quantum optimal control method to enhance cold-atom interferometry by optimizing mirror pulses using adaptive phase slicing, improving both efficiency and robustness against experimental imperfections. The team employed GRAPE (gradient ascent pulse engineering) to design non-uniform phase-sliced pulses for Mach-Zehnder interferometers, broadening tolerance to detuning and Rabi frequency variations while maintaining high transfer efficiency. The optimized pulses remained effective despite response-time delays up to 1.6 microseconds, outperforming conventional methods in handling coupling inhomogeneity and atomic velocity spread. This minimalist approach reduces experimental complexity while increasing scalability, offering a practical solution for high-precision quantum sensing applications. The work advances quantum control techniques for next-generation atom interferometers, critical for gravitational wave detection, inertial navigation, and fundamental physics tests.
Optimized Slice-Phase Control of Mirror Pulse in Cold-Atom Interferometry with Finite Response Time

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Quantum Physics arXiv:2601.15586 (quant-ph) [Submitted on 22 Jan 2026] Title:Optimized Slice-Phase Control of Mirror Pulse in Cold-Atom Interferometry with Finite Response Time Authors:Xueting Fang, Doudou Wang, Kun Yuan, Jie Deng, Qin Luo, Xiaochun Duan, Minkang Zhou, Lushuai Cao, Zhongkun Hu View a PDF of the paper titled Optimized Slice-Phase Control of Mirror Pulse in Cold-Atom Interferometry with Finite Response Time, by Xueting Fang and 8 other authors View PDF HTML (experimental) Abstract:Atom interferometers require both high efficiency and robust performance in their mirror pulses under experimental inhomogeneities. In this work, we demonstrated that quantum optimal control designed mirror pulse significantly enhance interferometer performance by using novel adaptive sliced structure. Using gradient ascent pulse engineering (GRAPE), optimized mirror pulse for a Mach-Zehnder light-pulse atom interferometer was designed by discretizing the control into non-uniform phase slices. This design broadened the tolerence to experimentally relevant variations in detuning $[-\Omega_0,\Omega_0]$ and Rabi frequency $[0.1\times\Omega_0,1.9\times\Omega_0]$ ($\Omega_0=2\pi\times25$ kHz), while maintaining high transfer efficiency even when the response-time delays up to 1.6 $\rm{\mu s}$. The optimized pulse was found to be robust to coupling inhomogeneity and velocity spread, offering a significant improvement in robustness over conventional pulse. The adaptive pulse slicing method provides a minimalist strategy that reduces experimental complexity while enhancing robustness and scalability, offering an innovative scheme for quantum optimal control in high precision atom interferometry. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2601.15586 [quant-ph] (or arXiv:2601.15586v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2601.15586 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Related DOI: https://doi.org/10.1103/r62p-d86z Focus to learn more DOI(s) linking to related resources Submission history From: Xueting Fang [view email] [v1] Thu, 22 Jan 2026 02:21:21 UTC (1,073 KB) Full-text links: Access Paper: View a PDF of the paper titled Optimized Slice-Phase Control of Mirror Pulse in Cold-Atom Interferometry with Finite Response Time, by Xueting Fang and 8 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?)

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Source: arXiv Quantum Physics