{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/determination-of-optimal-chain-coupling-made","title":"Determination of Optimal Chain Coupling made by Embedding in D-Wave Quantum Annealer","arxiv_id":"2406.03364","date":"2024-06-05","proceeding":null,"authors":["Hayun Park","Hunpyo Lee"],"abstract":"The qubits in a D-wave quantum annealer (D-wave QA) are designed on a Pegasus graph that is different from structure of a combinatorial optimization problem. This situation requires embedding with the chains connected by ferromagnetic (FM) coupling $J_c$ between the qubits. Weak and strong $J_c$ values induce chain breaking and enforcement of chain energy, which reduce the accuracy of quantum annealing (QA) measurements, respectively. In addition, we confirmed that even though the D-Wave Ocean package provides a default coupling $J_c^{\\text{default}}$, it is not an optimal coupling $J_c^{\\text{optimal}}$ that maximizes the possible correct rate of QA measurements. In this paper, we present an algorithm how $J_c^{\\text{optimal}}$ with the maximum probability $p$ for observing the possible lowest energy is determined. Finally, we confirm that the extracted $J_c^{\\text{optimal}}$ show much better $p$ than $J_c^{\\text{default}}$ in QA measurements of various parameters of frustrated and fully connected combinatorial optimization problems. The open code is available in \\textit{https://github.com/HunpyoLee/OptimizeChainStrength}.","url_abs":"https://arxiv.org/abs/2406.03364v1","url_pdf":"https://arxiv.org/pdf/2406.03364v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"determination-of-optimal-chain-coupling-made","repo_url":"https://github.com/hunpyolee/optimizechainstrength","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}