Quantum bit frequency control signal processing method and superconducting quantum chip

A quantum bit, frequency control technology, applied in the field of signal processing, can solve problems such as inability to distort calibration

Active Publication Date: 2020-12-29
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Distortion cannot therefore be calibrated directly at room temperature

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  • Quantum bit frequency control signal processing method and superconducting quantum chip
  • Quantum bit frequency control signal processing method and superconducting quantum chip
  • Quantum bit frequency control signal processing method and superconducting quantum chip

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Embodiment Construction

[0035]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present invention. Those of ordinary skill in the art have not made All other embodiments obtained under the premise of creative work belong to the protection scope of the present invention.

[0036]In the following description, "some embodiments" are referred to, which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and Can be combined with each other without conflict.

[0037]Before describing the embodiments of the present invention in further detail, the terms and terms involved in the embodiments of the present invention will be described. The terms and terms involved in the embodiments of ...

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Abstract

The invention provides a quantum bit frequency control signal processing method and a device, a superconducting quantum chip and a storage medium. The method comprises the following steps: configuringa first square wave pulse for a target quantum bit; when the end time of the first square wave pulse reaches a first time threshold, controlling the target quantum bit to rotate around the Y axis fora first target distance; when the end time of the first square wave pulse reaches a second time threshold, performing quantum tomography measurement on the target quantum bit to determine the state of the target quantum bit; performing a quantum tomography measurement result based on the target quantum bit, and determining a distortion amount of a frequency control signal of the target quantum bit; adjusting the frequency control signal based on the distortion amount of the frequency control signal of the target quantum bit; therefore, not only can the distortion of the superconducting quantum bit frequency control signal be measured, but also the control circuit can be corrected by utilizing the property of the measured transfer function, so that the rapid frequency offset of the bit canbe realized.

Description

Technical field[0001]The present invention relates to signal processing technology, in particular to a method and device for frequency control signal processing of qubits, a superconducting quantum chip and a storage medium.Background technique[0002]The qubit quantum bit on the superconducting chip is the carrier of quantum state and carries quantum information. Superconducting quantum computing has the advantage of fast running speed and is widely used. Quantum computing is divided into single-bit logic gate computing and two-bit logic gate computing. Two-bit logic gates include quantum state switching operations and controlled NOT operations (CNOTcontrollednon- gate operation) and controlled phase gate operation (CZ) and so on. The regulation and reading of superconducting quantum chips is an important link in the realization of quantum computing physics. High-precision quantum regulation and reading technology can improve the accuracy of quantum computing results. Since the qubit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N10/00G01R23/02G01R29/00
CPCG06N10/00G01R23/02G01R29/00G06N10/40G06N10/70B82Y10/00
Inventor 张贞兴周宇郑亚锐张胜誉
Owner TENCENT TECH (SHENZHEN) CO LTD
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