Measuring incompatibility and clustering quantum observables with a quantum switch / Papers QISS1 / By Qiss Ning Gao, Dantong Li, Anchit Mishra, Junchen Yan, Kyrylo Simonov, Giulio Chiribella QICI Hong Kong Preprint: 2208.06210Journal: Phys. Rev. Lett. 130, 170201 (2023)