Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate
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Quantum Physics arXiv:2605.26583 (quant-ph) [Submitted on 26 May 2026] Title:Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate Authors:Philipp Lohmann, Renato R. Domeneguetti, Daniel Wendland, Alessandro Perino, Tobias Egebjerg, Liam McRae, Jonas S. Neergaard-Nielsen, Wolfram H.P. Pernice, Ulrik L. Andersen View a PDF of the paper titled Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate, by Philipp Lohmann and 8 other authors View PDF HTML (experimental) Abstract:Scalable generation of nonclassical light sources on an integrated platform is a key requirement for photonic quantum information processing. In particular, realizing multiple indistinguishable squeezed light sources on a single chip is an essential step toward continuous-variable quantum computing. Here, we demonstrate the fabrication of two indistinguishable and independently controllable optical parametric oscillators on a thin-film lithium niobate (TFLN) platform. The device design focuses on reproducibility, independent tunability, and compatibility with larger telecom-wavelength continuous-variable photonic circuits. We observe up to 0.5 dB of directly measured squeezing below the shot-noise level from each source. By interfering the two modes on a beam splitter, we generate an EPR-type two-mode squeezed state and verify continuous-variable entanglement through violation of the Duan-Simon inseparability criterion. This is the first demonstration of two independently tunable squeezed-light sources on a single TFLN chip and their use for generating continuous-variable entanglement. Subjects: Quantum Physics (quant-ph); Optics (physics.optics) Cite as: arXiv:2605.26583 [quant-ph] (or arXiv:2605.26583v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2605.26583 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Renato Domeneguetti Ph.D [view email] [v1] Tue, 26 May 2026 06:03:55 UTC (4,167 KB) Full-text links: Access Paper: View a PDF of the paper titled Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate, by Philipp Lohmann and 8 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-05 Change to browse by: physics physics.optics 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?)