Integrated Superconducting Coils for Stable Ion Trap Magnetic Fields
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Solution Overview
Problem
Ion traps in quantum computing and atomic clocks are sensitive to variations in magnetic fields, which affect the coherence time of trapped ions due to reliance on environmental magnetic fields, leading to instability and reduced performance.
Innovation Solution
Integration of superconducting magnetic coils within the ion traps to generate a localized magnetic field, allowing for precise control and stabilization of the magnetic environment, reducing the impact of external magnetic noise and maintaining stability even when external currents are removed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If superconducting magnetic coils are integrated into ion traps to generate localized magnetic fields, then magnetic field stability and coherence time are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent integrates superconducting magnetic coils directly into the ion trap structure, merging the magnetic field generation function with the ion trapping structure. This integration eliminates the need for separate external magnetic field sources and reduces the number of discrete components, thereby improving magnetic field stability while managing device complexity through functional consolidation.
Solution Approach 2:
The patent utilizes the superconducting transition parameter change of the magnetic coil material. By cooling the magnetic coils below their critical temperature, the material transitions to a superconducting state with zero electrical resistance, enabling persistent currents that generate extremely stable magnetic fields without power supply fluctuations, thus achieving high magnetic field stability.
2Duration of action of moving object
If superconducting magnetic coils are used to stabilize magnetic fields, then coherence time of trapped ions is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements localized magnetic field generation by positioning superconducting coils in specific regions around the ion trap. This local quality approach allows precise control of magnetic field distribution in the ion confinement region, enhancing coherence time by eliminating magnetic field noise from external sources while managing manufacturing precision through focused fabrication requirements in critical areas.
Solution Approach 2:
The patent employs composite material structures combining superconducting materials with traditional ion trap materials. This composite approach leverages the unique properties of superconductors (zero resistance, magnetic field generation) while maintaining compatibility with existing ion trap fabrication techniques, thereby achieving enhanced coherence time with manageable manufacturing precision requirements.
3Object-affected harmful factors
If integrated superconducting coils are implemented, then isolation from external magnetic fluctuations is improved, but device complexity increases
Solution Approach 1:
The patent implements preliminary anti-action by using superconducting magnetic coils to generate compensating magnetic fields that counteract external magnetic fluctuations before they can affect the trapped ions. The superconducting coils detect and respond to external magnetic field changes by adjusting their persistent currents, creating opposing magnetic fields that cancel out harmful interference, thus protecting the ion quantum states.
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
The solution effectively stabilizes the magnetic field within the ion traps, enhancing the coherence time of trapped ions and improving the accuracy and reliability of quantum computing and atomic clock operations by isolating the ions from external magnetic fluctuations.
Implementation Method 1
each magnetic coil of the one or more magnetic coils is configured to be superconductive below a critical superconducting temperature
Implementation Method 2
each magnetic coil of the one or more magnetic coils is configured to generate a magnetic field when a current is applied
Data Source
AI summary
A system for trapping an ion, including one or more lane elements in a substrate, one or more direct current (DC) elements in the substrate and connected to an electrode controller, one or more radio frequency (RF) electrodes, an RF controller connected to the one or more RF electrodes and configured to provide an RF signal to the one or more RF electrodes, one or more magnetic coils each having a portion associated with at least a portion of a DC element of the one or more DC elements and configured to be superconductive below a critical superconducting temperature, and a magnetic coil controller connected to each magnetic coil of the one or more magnetic coils, where the magnetic coil controller is configured to control the superconductivity and the magnetic flux of each magnetic coil of the one or more magnetic coils in relation to a source magnetic field.