Frequency resolved optical gating using parametric amplification for characterizing ultrafast temporally multimode squeezed states
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Quantum Physics arXiv:2604.08717 (quant-ph) [Submitted on 9 Apr 2026] Title:Frequency resolved optical gating using parametric amplification for characterizing ultrafast temporally multimode squeezed states Authors:Elina Sendonaris, Thomas Zacharias, Robert Gray, James Williams, Alireza Marandi View a PDF of the paper titled Frequency resolved optical gating using parametric amplification for characterizing ultrafast temporally multimode squeezed states, by Elina Sendonaris and 4 other authors View PDF HTML (experimental) Abstract:Temporally multimode squeezed states have been a topic of recent interest due to their applications in quantum communication, information processing, and sensing. Characterizing the mode shapes is crucial for effectively manipulating these states, but current mode shape and state characterization techniques necessitate constraining assumptions and complicated experimental setups. Here, we propose a characterization technique that simultaneously recovers the complex temporal mode shapes and quadrature variances of ultrafast multimode squeezed states based on frequency resolved optical gating (FROG) using an optical parametric amplifier (OPA). FROG is a promising tool for quantum state characterization due to its flexibility of implementation and high temporal resolution. Using an OPA as the nonlinear process in FROG has the benefit of amplifying weak quantum states to a detectable level while preserving quantum information. Numerical simulations demonstrate the recovery of the mode shapes and levels of squeezing and anti-squeezing of ultrafast multimode squeezed states. This scheme offers a practical experimental approach to measuring arbitrary temporal mode shapes and characterizing large-scale multimode ultrafast Gaussian quantum states. Subjects: Quantum Physics (quant-ph); Applied Physics (physics.app-ph); Optics (physics.optics) Cite as: arXiv:2604.08717 [quant-ph] (or arXiv:2604.08717v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2604.08717 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Elina Sendonaris [view email] [v1] Thu, 9 Apr 2026 19:12:21 UTC (5,591 KB) Full-text links: Access Paper: View a PDF of the paper titled Frequency resolved optical gating using parametric amplification for characterizing ultrafast temporally multimode squeezed states, by Elina Sendonaris and 4 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-04 Change to browse by: physics physics.app-ph 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?)