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High-fidelity superconducting circuit structure, superconducting quantum chip and superconducting quantum computer

A circuit structure, superconducting quantum technology, applied in quantum computers, superconducting devices, circuits, etc., can solve problems such as quantum gate errors, and achieve the effect of improving fidelity

Active Publication Date: 2020-11-13
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution has achieved a certain degree of success, there are still many problems that need to be solved urgently. For example, ZZ parasitic coupling, that is, the change of the state of one calculation qubit will affect the frequency of another calculation qubit. The ZZ parasitic coupling Existence will directly lead to the emergence of quantum gate errors; therefore, how to effectively eliminate the ZZ parasitic coupling between computing qubits becomes an extremely critical proposition

Method used

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  • High-fidelity superconducting circuit structure, superconducting quantum chip and superconducting quantum computer
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  • High-fidelity superconducting circuit structure, superconducting quantum chip and superconducting quantum computer

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Embodiment Construction

[0017] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0018] It should be noted that the superconducting circuit structure described in the proposal of this application refers to a circuit realized by using superconducting devices, that is, the components used in the superconducting circuit structure are all made of superconducting materials.

[0019] Based on this, the application scheme provides a superconducting circ...

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Abstract

The invention discloses a high-fidelity superconducting circuit structure, a superconducting quantum chip and a superconducting quantum computer, and relates to the field of quantum computing. According to the specific implementation scheme, quantum bits are calculated; the coupling device is used for being coupled with the two calculation quantum bits; the connection assembly is arranged betweenthe calculation quantum bit and the coupling device and is used for carrying out coupling connection on the calculation quantum bit and the coupling device so as to realize a target quantum gate basedon the coupling device and the calculation quantum bit; in this way, parasitic coupling between the calculation quantum bits is eliminated by selecting reasonable superconducting circuit parameters,and the fidelity of the target quantum gate is improved.

Description

technical field [0001] This application relates to the field of computers, in particular to the field of quantum computing. Background technique [0002] In recent years, quantum computing hardware represented by superconducting circuits has made great progress in terms of performance. The more representative one is that in 2019, the Google AI Quantum team successfully realized a 53-qubit superconducting quantum chip, and in On it, the random circuit sampling task is realized, and then the quantum advantage is demonstrated. Although this technical solution has achieved a certain degree of success, there are still many problems that need to be solved urgently. For example, ZZ parasitic coupling, that is, the change of the state of one calculation qubit will affect the frequency of another calculation qubit. The ZZ parasitic coupling Existence will directly lead to the emergence of quantum gate errors; therefore, how to effectively eliminate the ZZ parasitic coupling between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N10/00H10N60/80
CPCG06N10/00G06N10/20G06N10/40H10N60/12H10N60/805
Inventor 晋力京段润尧
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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