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Title:
METHOD AND DEVICE FOR CALIBRATING FREQUENCY OF SUPERCONDUCTING QUBIT, AND READABLE STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/121809
Kind Code:
A1
Abstract:
A method and a device for calibrating the frequency of a superconducting qubit, and a readable storage medium. Said method comprises: applying a microwave signal to a superconducting qubit, and acquiring an initial oscillation frequency (S1); then determining, by means of a difference between the initial oscillation frequency and a first frequency, whether the frequency of the superconducting qubit has drifted (S2); and if the frequency of the superconducting qubit has drifted, adjusting the magnitude of a first voltage applied to the superconducting qubit to make the oscillation frequency continuously approximate to the first frequency, until the difference between the initial oscillation frequency and the first frequency satisfies a convergence condition (S3). By adjusting the magnitude of the first voltage, the oscillation frequency is continuously approximate to the first frequency, and the frequency of the superconducting qubit can be adjusted back to a predetermined value, that is, the superconducting qubit selected returns to a working point, thereby achieving automatic calibration of the frequency of a superconducting qubit which has drifted.

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Inventors:
SHI HANQING (CN)
KONG WEICHENG (CN)
Application Number:
PCT/CN2021/135511
Publication Date:
June 16, 2022
Filing Date:
December 03, 2021
Export Citation:
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Assignee:
ORIGIN QUANTUM COMPUTING TECH CO LTD (CN)
International Classes:
G01R23/02
Foreign References:
CN111523671A2020-08-11
CN109406875A2019-03-01
CN111722084A2020-09-29
CN110488091A2019-11-22
CN110612540A2019-12-24
CN102201811A2011-09-28
US20200183768A12020-06-11
US20180260732A12018-09-13
US20160013795A12016-01-14
CN202011414104A2020-12-07
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
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