Stationary two-qubit entanglement mediated by one-dimensional plasmonic nanoarrays
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Quantum Physics arXiv:2512.16016 (quant-ph) [Submitted on 17 Dec 2025] Title:Stationary two-qubit entanglement mediated by one-dimensional plasmonic nanoarrays Authors:Luke C. Ugwuoke, Tjaart P. J. Krüger, Mark S. Tame View a PDF of the paper titled Stationary two-qubit entanglement mediated by one-dimensional plasmonic nanoarrays, by Luke C. Ugwuoke and Tjaart P. J. Kr\"uger and Mark S. Tame View PDF HTML (experimental) Abstract:Entanglement is one of the key measures of quantum correlations present in nanophotonic systems, with promising applications in quantum optics and beyond. Previous studies have shown that the degree of entanglement between two quantum dot qubits is preserved when a metal nanoparticle is used to mediate the interactions between the qubits. In this work, we investigate long-range plasmonic mediation of qubit--qubit entanglement by studying the impact of the number of mediating metal nanoparticles on stationary concurrence. Collinear and periodically spaced metal nanoparticles that satisfy the weak-coupling approximation are considered. An effective model that enables the derivation of the mediated interactions within the framework of cavity quantum electrodynamics is employed. Under weak driving at the single particle resonance frequency, the model shows that odd-number arrays are more robust to entanglement decay. We attribute this to strong inter-qubit dissipative coupling as a result of a hybridized dipole plasmon resonating with the driving frequency in odd-number arrays. These arrays can sustain non-vanishing stationary entanglement beyond an inter-qubit spacing of one micron, opening up the possibility of independent spatial optical probing of each quantum dot. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2512.16016 [quant-ph] (or arXiv:2512.16016v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2512.16016 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Luke Ugwuoke [view email] [v1] Wed, 17 Dec 2025 22:47:16 UTC (1,448 KB) Full-text links: Access Paper: View a PDF of the paper titled Stationary two-qubit entanglement mediated by one-dimensional plasmonic nanoarrays, by Luke C. Ugwuoke and Tjaart P. J. Kr\"uger and Mark S. TameView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2025-12 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?)