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Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity

arXiv Quantum Physics
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A new protocol merges STIRAP (Stimulated Raman Adiabatic Passage) with time-rescaling shortcuts to adiabaticity, achieving full frequency conversion in optical systems with drastically reduced propagation distances compared to traditional methods. The research demonstrates how coupled three-wave mixing processes—modelled as STIRAP-like systems—enable robust frequency conversion but typically require long crystal or waveguide paths, limiting practical integration. By adapting the time-rescaling method for optics, the study introduces TR-STIRAP, which maintains full conversion efficiency while cutting required distances, accelerating potential real-world deployment in quantum devices. The protocol simplifies experimental implementation by approximating complex coupling coefficients with Gaussian functions, achieving high-fidelity conversion without sacrificing performance. Applications span quantum key distribution, photon source integration, and detector efficiency, offering a scalable solution for compact, high-performance quantum optical systems.
Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity

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Quantum Physics arXiv:2602.18930 (quant-ph) [Submitted on 21 Feb 2026] Title:Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity Authors:J. L.

Montenegro Ferreira View a PDF of the paper titled Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity, by J. L.

Montenegro Ferreira View PDF HTML (experimental) Abstract:In this letter we explore how full frequency conversion can be performed in shorter, integrable devices by using a STIRAP-like protocol modified by the time rescaling shortcut to adiabaticity. We show how the coupled equations for two simultaneous three-wave mixing processes can be written in terms of a STIRAP-like system, which creates robust conversion, albeit requiring long propagation distances inside a bulk crystal or waveguide. We then discuss how the time rescaling (TR) method can be modified to be applied in optical systems, then apply it in the conversion process to create a TR-STIRAP protocol, showing that full conversion is also obtained, but at a fraction of the propagation distance. We also show how the original shaping of the coupling coefficients required by the TR-STIRAP can be approximated by gaussian functions with high conversion fidelity, thus simplifying the experimental implementation. This protocol has the potential to be used in several areas, including the integration of photon sources and efficient detectors for quantum key distribution. Comments: Subjects: Quantum Physics (quant-ph); Optics (physics.optics) Cite as: arXiv:2602.18930 [quant-ph] (or arXiv:2602.18930v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.18930 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: José Lukas Montenegro Ferreira [view email] [v1] Sat, 21 Feb 2026 18:44:08 UTC (2,519 KB) Full-text links: Access Paper: View a PDF of the paper titled Integrable cascaded frequency conversion using the time rescaling shortcut to adiabaticity, by J. L. Montenegro FerreiraView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 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?) 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