US 11,893,453 B2
Quantum noise process analysis method and apparatus, device, and storage medium
Changyu Hsieh, Guangdong (CN); Yuqin Chen, Guangdong (CN); Yicong Zheng, Guangdong (CN); Kaili Ma, Guangdong (CN); and Shengyu Zhang, Guangdong (CN)
Assigned to TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, Guangdong (CN)
Filed by Tencent Technology (Shenzhen) Company Limited, Guangdong (CN)
Filed on Feb. 12, 2021, as Appl. No. 17/174,665.
Application 17/174,665 is a continuation of application No. PCT/CN2020/084897, filed on Apr. 15, 2020.
Claims priority of application No. 201910390722.5 (CN), filed on May 10, 2019.
Prior Publication US 2021/0166149 A1, Jun. 3, 2021
Int. Cl. G06N 10/00 (2022.01); G06N 20/00 (2019.01); G06N 7/01 (2023.01)
CPC G06N 10/00 (2019.01) [G06N 7/01 (2023.01); G06N 20/00 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A quantum noise process analysis method, applicable to a computer device, the method comprising:
performing quantum process tomography (QPT) on a quantum noise process of a target quantum system, to obtain dynamical maps of the quantum noise process wherein the QPT involves at least one measurement of the target quantum system;
extracting transfer tensor maps (TTMs) of the quantum noise process from the dynamical maps, the TTMs being used for representing a dynamical evolution of the quantum noise process; and
analyzing the quantum noise process according to the TTMs by:
extracting a second-order memory kernel of the quantum noise process according to the TTMs when the quantum noise process is a steady noise;
calculating a correlation function of the quantum noise process according to the second-order memory kernel of the quantum noise process; and
performing a Fourier transform on the correlation function of the quantum noise process to obtain a frequency spectrum of the quantum noise process.