SAMOP 2021 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 10: Certification and Benchmarking of Quantum Systems
QI 10.3: Vortrag
Donnerstag, 23. September 2021, 11:15–11:30, H5
Wigner state and process tomography on near-term quantum devices — •Amit Devra1,2, Niklas J. Glaser3,4, and Steffen J. Glaser1,2 — 1Technische Universität München, Department of Chemistry, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology (MCQST), 80799 München, Germany — 3Technische Universität München, Department of Physics, 85748 Garching, Germany — 4Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Germany
We present a scanning-based tomography approach in the context of finite-dimensional Wigner representations on near-term quantum devices. These representations completely characterize and visualize operators using shapes assembled from linear combinations of spherical harmonics [1]. The shapes can also be experimentally recovered by measuring the expectation value of rotated axial tensor operators. Here, we present the translation of a nuclear magnetic resonance (NMR) based experimental approach for state tomography [2] and known quantum propagators (gates) [3] for general quantum computers based on projective measurements and showcase results of simulations and experiments on the IBM quantum experience platform.
References: 1. A. Garon, R. Zeier, and S. J. Glaser, Phys. Rev. A 91, 042122 (2015). 2. D. Leiner, R. Zeier, and S. J. Glaser, Physical Review A 96, 063413 (2017). 3. D. Leiner and S. J. Glaser, Physical Review A 98, 012112 (2018).