Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of Matter

Quantum Physics arXiv:2609.10697 (quant-ph) [Submitted on 9 Sep 2026] Title:Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of Matter Authors:Ryan Rizaldy, Helen M Sheehy, Tian Zhou, Anupam Mazumdar View a PDF of the paper titled Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of Matter, by Ryan Rizaldy and 2 other authors View PDF HTML (experimental) Abstract:In the context of the QGEM (Quantum Gravity-induced Entanglement of Masses) experiment, we consider two adjacent matter-wave interferometers in linear and parallel configurations that interact solely via gravity. If gravity were quantum, then the two matter-wave interferometers would become entangled via the virtual excitation of the massless graviton. In this paper, we consider witnessing this entanglement by considering a generic experimental scenario where the two interferometers are subject to different global phases and different decoherence rates. In this context, we show that the individual global phases do not affect the witness, discuss common and differential decoherence modes, and perform the parameter search optimal for different masses. We provide a mathematical framework for these asymmetric decoherence rates and then search for parameters that determine the entanglement witness. We have kept the inter-separation distance between the two closest superpositions of the interferometers' masses fixed while varying the experimental time from $\tau=0.1$ s to $\tau=1$ s. Finishing the experiment at $ \tau=0.1$ s has many advantages from the point of view of protecting the experiment from random acceleration noise. However, witnessing the entanglement also suffers from $\langle W\rangle \sim -{\cal O}(10^{-2})$ for $m=10^{-14}$~kg, for decoherence rate in the ranges of ${\cal O}(10^{-1}-1)$~Hz for $\tau=0.1$ s experiment. However, as we show, increasing the mass of the matter-wave interferometer may improve the witness considerably. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2609.10697 [quant-ph] (or arXiv:2609.10697v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2609.10697 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Ryan Rizaldy [view email] [v1] Wed, 9 Sep 2026 18:00:12 UTC (381 KB) Full-text links: Access Paper: View a PDF of the paper titled Differential and Common Decoherence Modes in Witnessing the Quantum Gravity-Induced Entanglement of Matter, by Ryan Rizaldy and 2 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-09 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?) 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?)