Method and apparatus for optimizing a qubit control signal, and quantum computer
AssigneeOrigin Quantum Computing Technology (Hefei) Co., Ltd
InventorsHanqing SHI, Weicheng Kong
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Abstract
The present disclosure discloses a method and apparatus for optimizing a qubit control signal, and a quantum computer. The method includes: obtaining an operating frequency of a qubit based on a Ramsey experiment; obtaining a detuning amount of a frequency of the qubit control signal based on an amplified phase error (APE) experiment, where the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the qubit control signal; and optimizing the qubit control signal based on the detuning amount of the frequency.
Claims10
A method for optimizing a qubit control signal, comprising:
- obtaining an operating frequency of a qubit based on a Ramsey experiment;
- obtaining a detuning amount of a frequency of the qubit control signal based on an amplified phase error (APE) experiment, wherein the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the qubit control signal, and the frequency of the qubit control signal is set according to the operating frequency of the qubit;
- and
- determining the qubit control signal based on the detuning amount of the frequency.
A method for optimizing a single-bit quantum logic gate, wherein the single-bit quantum logic gate comprises a π gate, and the method comprises:
- obtaining an operating frequency of a qubit based on a Ramsey experiment;
- obtaining a detuning amount of a frequency of the π gate based on an APE experiment, wherein the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the π gate, and the frequency of the π gate is set according to the operating frequency of the qubit;
- optimizing the frequency of the π gate based on the detuning amount of the frequency;
- and
- optimizing an amplitude of the π gate based on an amplification (AMP) experiment, wherein the AMP experiment is an experiment that measures a change in the quantum state information of the qubit with the amplitude of the π gate.
An apparatus for optimizing a qubit control signal, comprising:
- a first measurement module configured to obtain an operating frequency of a qubit based on a Ramsey experiment;
- a second measurement module configured to obtain a detuning amount of a frequency of the qubit control signal based on an APE experiment, wherein the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the qubit control signal, and the frequency of the qubit control signal is set according to the operating frequency of the qubit;
- and
- an optimization module configured to optimize the qubit control signal based on the detuning amount of the frequency.
Dependencies are inferred from the claim text.