公开(公告)号：US20230306294A1

公开(公告)日：2023-09-28

申请号：US18202156

申请日：2023-05-25

Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.

Inventor： Kun WANG ,  Shuanghong TANG

IPC: G06N10/20

CPC classification number: G06N10/20

Abstract: A method is provided. The method includes: obtaining a maximally mixed state; repeatedly running a quantum measurement device to perform measurement for a first number of times on the maximally mixed state to obtain first measurement results; applying a phase gate to each quantum bit of the maximal superposition state; performing multiple times of sampling on the phase θ, for each value of θ obtained by sampling, repeatedly running the quantum measurement device to perform measurement for a second number of times on the maximal superposition state to obtain second measurement results; statistically calculating the first measurement result and the second measurement result corresponding to each θ value to obtain a first probability value and a second probability value; and determining the quantum noise intensity of the quantum measurement device based on a difference value between the first probability value and the second probability value.