Author(s): Haipeng Xie, Nobuyuki Yoshioka, Kento Tsubouchi, and Ying Li Probabilistic error cancellation is a quantum error mitigation technique capable of producing unbiased computation results, but it requires an accurate error model. Constructing this model involves estimating a set of parameters, which, in the worst case, may scale exponentially with the number of q… [Phys. Rev. Lett. 136, 010603] Published Wed Jan 07, 2026