Semi-Active Magnetic Shielding for Quantum Computing Components
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Solution Overview
Problem
Quantum computing chips are sensitive to stray magnetic fields generated by neighboring components, which can interfere with their operation and lead to errors in quantum processing.
Innovation Solution
A compensation current signal is applied to a shielding circuit to magnetically shield components from stray magnetic fields, using a predetermined function of the current signal generated by the source component to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If components are placed close together on the quantum computing chip to increase integration density, then productivity is improved, but stray magnetic fields from neighboring components interfere with component operation reducing reliability
Solution Approach 1:
The patent converts the harmful stray magnetic fields generated by neighboring components into a useful compensation mechanism. By applying compensation current signals to shielding circuits, the harmful magnetic interference is transformed into a controlled magnetic field that cancels out the stray fields, thereby protecting component operation while maintaining high integration density
Solution Approach 2:
The patent introduces shielding circuits as intermediary elements between neighboring components. These shielding circuits act as mediators that generate compensation magnetic fields to counteract the stray magnetic fields from adjacent components, enabling close component placement without interference
2Reliability
If active magnetic shielding with feedback loops is implemented to reduce stray magnetic field impact, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and applying compensation current signals based on predetermined functions of the source component currents. This approach establishes magnetic shielding before interference occurs, eliminating the need for complex real-time feedback loops while maintaining reliable component operation
Solution Approach 2:
The shielding system performs self-service by using the known current signals from source components to automatically generate appropriate compensation currents. The predetermined functions enable the system to self-regulate magnetic interference without external feedback control, reducing device complexity
3Reliability
If traditional magnetic shielding materials are added to protect components from stray fields, then reliability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces mechanical/physical magnetic shielding materials with an electromagnetic field-based solution. Instead of using ferromagnetic materials or physical barriers, the system uses compensation current signals to generate opposing magnetic fields, thereby eliminating the need for additional shielding materials and simplifying the fabrication process
Solution Approach 2:
The patent changes the approach from passive material-based shielding to active parameter-controlled field cancellation. By adjusting compensation current parameters based on predetermined functions of source currents, the system achieves magnetic shielding without requiring additional materials or complex fabrication steps
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces the impact of stray magnetic fields on quantum computing components, improving operational stability and reducing errors without requiring feedback loops or additional materials, and can be integrated into existing chip fabrication processes.
Implementation Method 1
applying a compensation current signal to a shielding circuit of the quantum computing chip, the compensation current signal generated according to a predetermined function of the first signal, to magnetically shield the second component from the stray magnetic field generated by the first component
Data Source
AI summary
A computer-implemented method of reducing an impact of stray magnetic fields on components of a quantum computing chip is disclosed. The computer implemented method includes applying a first current signal to a first component of a quantum computing chip, whereby the first component generates a stray magnetic field impacting an operation of a second component of the quantum computing chip. The computer implemented method further includes applying a compensation current signal to a shielding circuit of the quantum computing chip, the compensation current signal generated according to a predetermined function of the first signal, to magnetically shield the second component from the stray magnetic field generated by the first component.