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Magnetic levitation and spatial superposition of a nanodiamond with a current-carrying chip

arXiv Quantum Physics
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⚡ Quantum Brief
Researchers propose a novel method using current-carrying chips to create spatial quantum superpositions in levitating nanodiamonds containing nitrogen-vacancy (NV) centers, advancing macroscopic quantum experiments. The system targets masses between 10⁻¹⁹ kg and 10⁻¹⁵ kg, achieving superposition sizes from nanometers to tens of micrometers in under 0.1 seconds, depending on launch position. Two parallel chips enable stable levitation along the z-axis (gravity) and tight confinement in the y-direction, while generating one-dimensional superposition along the x-axis via numerical simulations. This tabletop setup aims to test the quantum gravity-induced entanglement of masses (QGEM) protocol, potentially creating macroscopic Schrödinger Cat states for foundational quantum tests. The work combines diamagnetic levitation with NV centers, offering a scalable platform to explore quantum-gravity interfaces in controlled laboratory conditions.
Magnetic levitation and spatial superposition of a nanodiamond with a current-carrying chip

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Quantum Physics arXiv:2601.06608 (quant-ph) [Submitted on 10 Jan 2026] Title:Magnetic levitation and spatial superposition of a nanodiamond with a current-carrying chip Authors:Qian Xiang, Shafaq Gulzar Elahi, Andrew Geraci, Sougato Bose, Anupam Mazumdar View a PDF of the paper titled Magnetic levitation and spatial superposition of a nanodiamond with a current-carrying chip, by Qian Xiang and 4 other authors View PDF HTML (experimental) Abstract:We propose a current-carrying-chip scheme for generating spatial quantum superpositions using a levitating nanodiamond with a built-in nitrogen-vacancy (NV) centre defect. Our setup is quite versatile and we aim to create the superposition for a mass range of $10^{-19}~{\rm kg} 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