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Efficient mapping of multi-constraint satisfaction problems to Rydberg platforms

arXiv Quantum Physics
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⚡ Quantum Brief
Researchers introduced a hardware-native gadget framework for Rydberg quantum computers, solving constraint satisfaction problems via a novel xor₁ gadget that enforces "exactly-one" constraints using geometric embedding and blockade interactions. The xor₁ gadget eliminates large penalty terms by leveraging fixed, problem-size-independent detuning, reducing detuning range by up to 99% compared to QUBO methods, significantly improving experimental feasibility. Unlike traditional encodings requiring all-to-all couplings, this approach tailors to Rydberg arrays’ planar connectivity, avoiding highly connected layouts and enabling scalable, near-term neutral-atom hardware compatibility. Demonstrations on gate-assignment and N-queens problems showed up to 54% reductions in atom count and connectivity overhead, proving resource efficiency without extensive classical preprocessing. This breakthrough enables large-scale combinatorial optimization on Rydberg platforms, surpassing current encoding limits and advancing practical quantum advantage for real-world applications.
Efficient mapping of multi-constraint satisfaction problems to Rydberg platforms

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Quantum Physics arXiv:2604.27030 (quant-ph) [Submitted on 29 Apr 2026] Title:Efficient mapping of multi-constraint satisfaction problems to Rydberg platforms Authors:Robert Gloeckner, Shahram Panahiyan, Frederik Koch, Dieter Jaksch, Joseph Doetsch View a PDF of the paper titled Efficient mapping of multi-constraint satisfaction problems to Rydberg platforms, by Robert Gloeckner and 4 other authors View PDF HTML (experimental) Abstract:We present a hardware-native gadget framework for solving constraint satisfaction problems on Rydberg quantum computing architectures. Our approach introduces a compact $xor_1$ gadget that enforces exactly-one constraints, ubiquitous in combinatorial optimization, directly through geometric embedding and blockade interactions. A key advantage of the $xor_1$ gadget is its fixed, problem-size-independent detuning requirements: enforcing constraints through blockade interactions eliminates the need for large penalty terms, thereby substantially reducing the detuning range compared to Quadratic Unconstrained Binary Optimization (QUBO) formulations and improving experimental feasibility. By tailoring the construction to the geometric connectivity of Rydberg atom arrays, the framework bypasses the all-to-all physical couplings often assumed in logical encodings. This enables embeddings compatible with planar layouts and avoids highly connected arrangements. We develop scalable implementations that reduce atom count and connectivity overhead while avoiding extensive classical preprocessing, making them compatible with near-term neutral-atom hardware. As illustrations, we apply our framework to the gate-assignment and $N$-queens problems, highlighting its practicality, resource efficiency, and hardware compatibility. In these examples, we observe reductions in detuning range of up to $99\%$ and savings in atom count and connectivity overhead of up to $54\%$ compared to the QUBO method. These results establish a route toward implementing large-scale combinatorial optimization on Rydberg platforms beyond the limits of existing encodings. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.27030 [quant-ph] (or arXiv:2604.27030v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2604.27030 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Shahram Panahiyan [view email] [v1] Wed, 29 Apr 2026 15:01:02 UTC (2,303 KB) Full-text links: Access Paper: View a PDF of the paper titled Efficient mapping of multi-constraint satisfaction problems to Rydberg platforms, by Robert Gloeckner and 4 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-04 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?)

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neutral-atom
quantum-optimization
government-funding
quantum-computing

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Source: arXiv Quantum Physics