Quantum Circuits for Exact Unitary t-Designs and Applications to Higher-Order Randomized Benchmarking

Nakata, Y; Zhao, D; Okuda, T; Bannai, E; Suzuki, Y; Tamiya, S; Heya, K; Yan, ZG; Zuo, K; Tamate, S; Tabuchi, Y; Nakamura, Y

Nakata, Y (corresponding author), Univ Tokyo, Photon Sci Ctr, Grad Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan.; Nakata, Y (corresponding author), JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan.

PRX QUANTUM, 2021; 2 (3):

Abstract

A unitary t-design is a powerful tool in quantum information science and fundamental physics. Despite its usefulness, only approximate implementations......

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