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Quantum Circuit Synthesis Using an Exact T Library

arXiv Quantum Physics
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⚡ Quantum Brief
Researchers from UCLA and Peking University introduced a breakthrough in fault-tolerant quantum circuit synthesis by replacing traditional AND-count minimization with an exact T-gate optimization framework, addressing inefficiencies in phase cancellation. The team precomputed T-optimal implementations for Boolean functions with up to seven variables, creating a canonical library that reduces T-gate counts by leveraging Clifford equivalence transformations. Benchmark tests on EPFL circuits showed up to 14.3% fewer T gates, while cryptographic modules like AES and SHA-3 achieved 40% reductions, significantly lowering space-time costs in fault-tolerant systems. Unlike prior methods relying on {XOR, AND, NOT} proxies, this approach directly targets T-gate minimization, which dominates overhead in magic-state distillation-based quantum computing architectures. The work provides a customized mapper to integrate precomputed T-optimal circuits, offering a practical path to optimizing real-world quantum algorithms for near-term fault-tolerant devices.
Quantum Circuit Synthesis Using an Exact T Library

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Quantum Physics arXiv:2605.15476 (quant-ph) [Submitted on 14 May 2026] Title:Quantum Circuit Synthesis Using an Exact T Library Authors:Hanyu Wang, Mingfei Yu, Xinrui Wu, Jason Cong View a PDF of the paper titled Quantum Circuit Synthesis Using an Exact T Library, by Hanyu Wang and 3 other authors View PDF HTML (experimental) Abstract:In fault-tolerant quantum circuit synthesis, T gates supplied via magic states dominate space-time cost, while Clifford gates incur negligible overhead. Conventional flows minimize AND count in an {XOR, AND, NOT} basis as a proxy for T, which neglects phase cancellation and can be far from T-optimal. We instead formulate an exact T synthesis problem and canonicalize Boolean functions under Clifford equivalence. By precomputing T-optimal implementations up to seven variables and developing a customized mapper, we reduce the T count by up to 14.3% on EPFL benchmarks and improve the T counts of several cryptographic modules by up to 40%. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2605.15476 [quant-ph] (or arXiv:2605.15476v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2605.15476 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Hanyu Wang [view email] [v1] Thu, 14 May 2026 23:34:01 UTC (487 KB) Full-text links: Access Paper: View a PDF of the paper titled Quantum Circuit Synthesis Using an Exact T Library, by Hanyu Wang and 3 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-05 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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Source: arXiv Quantum Physics