Bonn 2025 – scientific programme

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QI: Fachverband Quanteninformation

QI 1: Certification and Benchmarking of Quantum Systems

QI 1.4: Talk

Monday, March 10, 2025, 12:00–12:15, HS IX

Shadow-based characterization of superconducting quantum processors — •Pedro Joaquin Weiler Perez, Florentin Reiter, Thomas Wellens, and Martin Koppenhöfer — Fraunhofer Institut für Angewandte Festkörperphysik (IAF), Freiburg im Breisgau, Deutschland

Characterization techniques for quantum processors have become an important tool to improve quantum gate operations, qubit initialization, and read-out processes. Moreover, efficient characterization techniques guide the development of efficient quantum-error-correction and quantum-error-mitigation strategies, and they allow one to build error models for a more realistic simulation of quantum algorithms. For these different purposes, a variety of benchmarking methods has been developed (e.g., randomized benchmarking tools as well as quantum state, process, and gate-set tomography). Typically, characterization techniques that provide a larger level of detail come at the cost of a higher computational complexity. Recently, it has been pointed out that one can extract many relevant features of a quantum system without having to perform a full tomography. So-called classical shadow tomography emerged as a promising and flexible new characterization technique with provably efficient sampling. In this talk, we discuss our approach to shadow-based characterization of quantum states and quantum processes on superconducting quantum processors

Keywords: Classical shadow tomography; Characterization technique for quantum processors; Superconducting quantum processors; Quantum state, process and gate-set tomography