Resources
Publications
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Qudit stabilizer codes for ZN lattice gauge theories with matter
Luca Spagnoli, Alessandro Roggero, and Nathan Wiebe
arXiv:2602.20661 [quant-ph] ()In this work we extend the connection between Quantum Error Correction (QEC) and Lattice Gauge Theories (LGTs) by showing that a \(ZN\) gauge theory with prime dimension \(N\) coupled to dynamical matter can be expressed as a qudit stabilizer code. …
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Improving Quantum Multi-Objective Optimization with Archiving and Substitution
Linus Ekstrom, Takafumi Hosogi, Xavier Bonet-Monroig, Sebastian Schmitt, Hao Wang, and Thomas Bäck
Presented at The 11th International Conference on Machine Learning, Optimization, and Data Science (LOD) 2025 ()Finding optimal solutions of conflicting objectives is a daily matter in many industrial applications, with multi-objective optimization trying to find the best solutions to them. The advent of quantum computing has led to researchers wondering if …
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Fault-tolerant simulation of Lattice Gauge Theories with gauge covariant codes
Luca Spagnoli, Alessandro Roggero, and Nathan Wiebe
Quantum 10, 1968 () | arXiv:2405.19293 [quant-ph]We show in this paper that a strong and easy connection exists between quantum error correction and Lattice Gauge Theories (LGT) by using the Gauge symmetry to construct an efficient error-correcting code for Abelian \(Z2\) LGTs. We identify the …
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Video Abstracts
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Quantum Optimization with contraints - a new research approach using qudit-sum gates
September 01, 2025
Quantum optimization is emerging as a prominent candidate for exploiting the capabilities of near-term quantum devices. Many application-relevant optimization tasks require the inclusion of inequality constraints. Our recent research explores a new …
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Qudit Quantum Computing: Studying the Dance of Elementary Particles
March 25, 2025
The study of elementary particles and forces is of central importance to our understanding of the universe. Now a team of physicists from the University of Innsbruck and the Institute for Quantum Computing (IQC) at the University of Waterloo show how …
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Design Automation and software for Mixed-dimensional Quantum Computing
April 30, 2024
This video briefly introduces MQT Qudits—a tool for research and education for mixed-dimensional qudit quantum computing developed as part of the Munich Quantum Toolkit (MQT). For more information, check out the corresponding github repo at …
Reports
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April 30, 2024
This report outlines the developments within NeQST towards scalable qudit characterization techniques, error model, and certification of the quantum performance. Compared to their simpler two-level counterpart, qudits present a range of new …
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April 30, 2024
This report outlines the developments within NeQST towards quantum simulation of chiral symmetry breaking and fractional excitation patterns in multiflavor Abelian gauge theories. While quantum simulation of gauge theories has made fast progress over …
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Deliverable D5.8 — Second NeQST Conference
April 30, 2024
The second NeQST conference took place on 9-11 April 2024 in the premises of the Honda Research Institute Europe (HRI) in Offenbach, Germany. The programme of the conference covered three days, from the early afternoon of Tuesday 9 April until …
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