Master Thesis MSTR-2025-29

BibliographyNguyen, Duc Anh: Quantum circuit optimization for circuit cutting.
University of Stuttgart, Faculty of Computer Science, Electrical Engineering, and Information Technology, Master Thesis No. 29 (2025).
63 pages, english.
Abstract

In this work, we present an optimization framework aimed at reducing the sampling overhead associated with circuit cutting in quantum computing. We design a complete pipeline that integrates circuit rewriting, overhead evaluation via qiskit-addon-cutting, and heuristic search using simulated annealing and genetic algorithms. To enable more efficient circuit representations, we propose six rewriting techniques, including methods that exploit gate commutativity and ZX-Calculusbased transformations. The latter allows flexible rewrites through diagrammatic rules such as simplification, local complementation, and pivoting. Our experimental evaluation on benchmark circuits demonstrates that ZX-based strategies significantly reduce sampling overhead, while pure commutativity-based approaches show limited gains. To improve scalability, we introduce a windowed rewriting approach that targets random circuit sections, offering further performance benefits. Comparative results reveal that simulated annealing consistently finds lower-overhead solutions, whereas the genetic algorithm provides superior runtime performance through parallel evaluation. Our findings highlight the value of structured rewriting and search-based optimization in preparing circuits for circuit cutting.

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Department(s)University of Stuttgart, Institute of Architecture of Application Systems, Architecture of Application Systems
Superviser(s)Leymann, Prof. Frank; Bechtold, Marvin; Mandl, Alexander
Entry dateAugust 14, 2025
   Publ. Department   Publ. Institute   Publ. Computer Science