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QI: Fachverband Quanteninformation
QI 24: Verification and Benchmarking of Quantum Systems
QI 24.7: Talk
Thursday, March 21, 2024, 11:30–11:45, HFT-TA 441
Parameterizing Pauli noise to capture crosstalk in quantum devices — •Matthias Zipper1, Christopher Cedzich2, and Martin Kliesch1 — 1Hamburg University of Technology, Germany — 2Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
Physically meaningful and efficient noise models are important for the development of reliable quantum devices. We propose a parameterization of Pauli noise that arises naturally from intuitive axioms and combines the following desirable properties: (i) Each parameter is associated with a subset of qubits, and hence is interpreted as describing regional noise. (ii) While a priori capable of representing any Pauli noise channel, the parameterization becomes efficient under physically motivated locality assumptions. (iii) Our approach is compatible with a wide range of SPAM-robust protocols from the RB family, which facilitates its practical use in quantum system characterization. Our model thus resolves the spatial structure of Pauli noise and addresses the topic of "crosstalk" for quantum gates and circuits.
Keywords: Crosstalk; Pauli channels; Quantum noise; Quantum system characterization