公开(公告)号：US20230186137A1

公开(公告)日：2023-06-15

申请号：US18164334

申请日：2023-02-03

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Xin WANG ,  Lijing JIN ,  Zhan YU ,  Chenghong ZHU ,  Xuanqiang ZHAO

IPC: G06N10/40 ,  G06N10/20

CPC classification number: G06N10/40 ,  G06N10/20

Abstract: The present disclosure provides a quantum circuit processing method and a quantum circuit processing device on a quantum chip, and an electronic device, and it relates to the field of quantum computing technology, in particular to the field of quantum circuit technology. The method includes: obtaining a first swap fidelity for measuring connectivity of the quantum chip, the first swap fidelity being determined in accordance with first information, the first information being used to represent a topological structure of the quantum chip, the topological structure indicating that the quantum chip includes at least two physical quantum bits, the first swap fidelity being used to represent an average state maintenance level of logic quantum bits obtained through analog exchanging quantum states of any two of the physical quantum bits; and performing quantum circuit processing on the quantum chip in accordance with the first swap fidelity.

公开(公告)号：US20240062093A1

公开(公告)日：2024-02-22

申请号：US18447242

申请日：2023-08-09

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

Inventor： Xin WANG ,  Chenghong ZHU ,  Xuanqiang ZHAO

IPC: G06N10/70 ,  G06N10/20

CPC classification number: G06N10/70 ,  G06N10/20

Abstract: A method is provided that includes: determining auxiliary qubits and a quantum state ρ on which a preset quantum operation is to be performed; modeling quantum noise in the quantum operation to obtain a quantum noise channel corresponding to the quantum operation; initializing an encoding circuit to be trained, where the encoding circuit includes an adjustable parameter and is configured to act on the quantum state ρ and the auxiliary qubits; defining an expression of first mapping, where a result obtained after the first mapping, the quantum noise channel, and the encoding circuit are connected in series is close to an identity channel within a preset error tolerance range; adjusting a value of the adjustable parameter of the encoding circuit to determine the first mapping; and determining, based on the trained encoding circuit and the first mapping, an unbiased estimate of a quantum operation result obtained after canceling quantum noise.