Qubit Gate Calibration Using Fidelity-Based Dynamic Path Selection
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Solution Overview
Problem
Existing qubit gate calibration methods in quantum computing suffer from low efficiency due to fixed calibration paths and processes, which fail to explore better calibration paths and result in delayed execution of quantum computing tasks.
Innovation Solution
A dynamic calibration method that determines the next qubit gate and calibration means based on the current qubit gate's fidelity, using pre-stored mapping relationships to optimize the calibration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed calibration path is used for qubit gates, then the calibration process is simple and deterministic, but the calibration efficiency is low and fidelity improvement is limited
Solution Approach 1:
The patent implements dynamic calibration path selection based on real-time fidelity measurements. The calibration process transitions from a fixed sequence to a adaptive path where the next calibration target is dynamically determined according to the current fidelity state of qubit gates, allowing the system to explore more effective calibration sequences and improve overall efficiency.
Solution Approach 2:
The patent introduces feedback mechanisms where fidelity measurements of calibrated qubit gates are used to determine the next calibration target. This closed-loop feedback allows the system to learn from previous calibration results and adjust the calibration path accordingly, optimizing the overall calibration process without requiring complex pre-planned sequences.
2Manufacturing precision
If a fixed calibration process is used, then the calibration procedure is easy to implement, but the fidelity of qubit gates cannot be optimized effectively
Solution Approach 1:
The calibration system performs self-evaluation through fidelity measurements and automatically determines the next calibration target based on the current state of qubit gates. This self-service mechanism eliminates the need for complex external control and manual intervention, maintaining ease of operation while achieving optimized fidelity through automated adaptive calibration.
Solution Approach 2:
The patent changes the calibration parameter from a fixed sequential order to a fidelity-based dynamic selection. By using fidelity intervals and mapping relationships to determine calibration targets, the system optimizes the calibration process for each specific qubit gate state, achieving better fidelity without requiring overly complex operational procedures.
3Loss of time
If calibration is performed sequentially with fixed order, then the calibration process is straightforward, but the total calibration time is increased
Solution Approach 1:
The patent pre-establishes mapping relationships between qubit gates and their calibration parameters, as well as fidelity intervals that guide the calibration process. This preliminary preparation allows the system to quickly determine the next calibration target without complex real-time calculations, reducing overall calibration time while maintaining manageable control complexity through pre-computed guidance structures.
Data Source
AI summary
The present disclosure provides a method for calibrating a qubit gate performed by an electronic device. The method includes: obtaining a first fidelity of a first qubit gate from qubit gates for processing a qubit; determining a first fidelity interval including the first fidelity from a plurality of preset fidelity intervals; determining a target second qubit gate from the qubit gates based on the first qubit gate and the first fidelity interval and based on a first mapping relationship between a plurality of prior-calibrated qubit gates and a corresponding fidelity interval and a plurality of preferred target qubit gates; determining a first calibration means from a plurality of first candidate calibration means based on the first qubit gate and the first fidelity interval and based on a second mapping relationship between the prior-calibrated qubit gates and calibration means; and calibrating the second qubit gate through the first calibration means.