Practical wavelength selection for quantum-augmented networks over shared optical fiber

Quantum Physics arXiv:2610.20987 (quant-ph) [Submitted on 14 Oct 2026] Title:Practical wavelength selection for quantum-augmented networks over shared optical fiber Authors:Nitin Jha, Prateek Paudel, Abhishek Parakh View a PDF of the paper titled Practical wavelength selection for quantum-augmented networks over shared optical fiber, by Nitin Jha and 2 other authors View PDF HTML (experimental) Abstract:In a quantum augmented network, sharing optical fiber with classical traffic requires quantum wavelength selection to balance logical fidelity, block acceptance, and classical data reception. Here we develop a wavelength-selection framework for an error-corrected three-stage quantum communication protocol. Under a thermal-background model with independent errors, an ideal one-photon receiver, and ideal recovery, we derive an accepted qubit channel and a key-independent lower bound on logical entanglement fidelity. Combining this bound with block acceptance gives an entanglement-fidelity yield bound, which we maximize over evaluated wavelengths subject to fidelity and classical link-budget requirements. For the Steane [[7,1,3]] code at 5 km per traversal and -10 dBm per classical channel, the largest fidelity certificate occurs near 1537 nm, whereas the largest yield bound occurs near 1551 nm. Along the 1.25 Gb/s classical link budget with 0.2% base error, the optimized yield bound falls below 10^-6 near 10 km per traversal, while fidelity remains certified at 0.99 or higher at longer spans. These results distinguish fidelity and yield constraints and identify certified operating regions for quantum-augmented networks sharing optical fiber. Subjects: Quantum Physics (quant-ph); Cryptography and Security (cs.CR); Networking and Internet Architecture (cs.NI) Cite as: arXiv:2610.20987 [quant-ph] (or arXiv:2610.20987v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2610.20987 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Nitin Jha [view email] [v1] Wed, 14 Oct 2026 22:01:42 UTC (759 KB) Full-text links: Access Paper: View a PDF of the paper titled Practical wavelength selection for quantum-augmented networks over shared optical fiber, by Nitin Jha and 2 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-10 Change to browse by: cs cs.CR cs.NI 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?)