In this talk we will describe the Floquet calibration tomography and some error mitigation methods that were used in our team in recent large scale quantum simulation experiments. In particular we will show the calibration data that allow to reach the accuracy ~5×10^-6 radians on swap angle in 2-qubit gate. We will describe the calibration challenges associated with the off axis rotations at swap angles and the ways to improve the precision. We will describe how two benchmark circuits: Fermi Hubbard and out of time order correlator (OTOC) measurements. In the later case we will describe the theory and implementation of noise mitigation methods that are based on the theoretical modeling of average noisy OTOC as well as on the expansion of the OTOC circuits into the Clifford circuits. Finally we will show how the ablative methods allow to define a blue print to first beyond classical computation of a nontrivial local observable such as OTOC.
Speaker: Vadim Smelyanskiy
product: Quantum – Research; event: Quantum Summer Symposium 2021; fullname: Vadim Smelyanskiy;