公开(公告)号：US20210304054A1

公开(公告)日：2021-09-30

申请号：US17218690

申请日：2021-03-31

Applicant: Google LLC

Inventor： Charles James Neill ,  Vadim Smelyanskiy ,  Yu Chen ,  Xiao Mi ,  Yuezhen Niu ,  Kostyantyn Yevgenovych Kechedzhi ,  Alexander Nikolaevich Korotkov ,  Zhang Jiang

IPC: G06N10/00 ,  G06F15/16

Abstract: Systems and methods for composite quantum gate calibration for a quantum computing system are provided. In some implementations, a method includes accessing a unitary gate model describing a composite quantum gate. The unitary gate model includes a plurality of gate parameters. The method includes implementing the composite quantum gate for a plurality of gate cycles on the quantum system to amplify the plurality of gate parameters. The method includes obtaining a measurement of a state of the quantum system after implementing the composite quantum gate for the plurality of gate cycles. The method includes determining at least one of the plurality of gate parameters based at least in part on the measurement of the state of the quantum system. The method includes calibrating the composite quantum gate for the quantum computing system based at least in part on the plurality of gate parameters.