Integrated Ion Trap Electromagnets for Magnetic Field Precision
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Solution Overview
Problem
Previous ion trapping methods using external magnets lack precision due to local variations in the magnetic field, which can be undesirable in regions requiring uniformity or variability.
Innovation Solution
The integration of medial and peripheral coils within the ion trap, positioned at specific radial angles, generates controlled magnetic fields to trap ions with enhanced precision, allowing for both uniform and varied field creation as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external magnets are used for ion trapping, then the trapping function is achieved, but the precision is reduced due to local variations in the magnetic field
Solution Approach 1:
The patent merges the magnet and ion trap into a single integrated device, with the magnet positioned in direct contact with or adjacent to the ion trap surface. This integration eliminates the spatial separation between magnetic field generation and ion confinement, allowing precise control of local magnetic field conditions at the ion trapping location while maintaining overall field uniformity where needed.
Solution Approach 2:
The integrated magnet allows different regions of the ion trap to have different magnetic field characteristics. Local variations in the magnetic field can be engineered at specific trapping zones to enhance precision, while other regions maintain uniformity for stable ion confinement. This spatial differentiation of field properties directly addresses the precision-uniformity tradeoff.
2Device complexity
If external magnets are distanced from the trap surface, then the device complexity is reduced, but the control precision over ion states deteriorates
Solution Approach 1:
By combining the magnet and ion trap into one integrated structure, the patent eliminates the need for separate positioning systems and complex alignment procedures. The magnet is fabricated as part of the trap device itself, reducing mechanical complexity while maximizing control precision through direct field application at the ion location.
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 provides precise control over trapped ions, enabling more accurate manipulation of ion states and logical functions, such as flipping ionic spin, while compensating for magnetic field falloff and inhomogeneities.
Implementation Method 1
An ion trap can use a combination of electrical and magnetic fields to capture one or more ions in a potential well
Implementation Method 2
the behavior of ions in a trap can be a sensitive function of the local magnetic field around the ion(s)
Data Source
AI summary
Devices, systems, and methods for ion trapping with integrated electromagnets are described herein. One device includes a plurality of electrodes configured to trap an ion above a surface of the device, a medial coil and a plurality of peripheral coils, each positioned at a respective radial angle associated with the medial coil, wherein the medial coil is configured to generate a first magnetic field having a first orientation, and wherein the peripheral coils are configured to generate a second magnetic field having a second orientation that opposes the first orientation.