Ring Ion Trap With Continuous Blades for Low-Noise Recirculation
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Solution Overview
Problem
Existing ion traps are either too large and power-hungry or sacrifice performance for reduced size and power, lacking a compact, ultra-stable, atom-based frequency reference with a recirculating ion beam.
Innovation Solution
A compact ion trap design featuring structurally continuous blades and recessed control electrodes in a ring configuration, enabling continuous ion shuttling and trapping with reduced noise and optical access, using a combination of RF and DC fields to maintain a deep trapping potential without cryogenic operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional ion traps are used to achieve precise spectroscopic measurements, then measurement precision is improved, but device size and power consumption increase
Solution Approach 1:
The ion trap is divided into multiple functional zones along the linear path: ionization region, cooling region, trapping region, and detection region. This segmentation allows each zone to be optimized independently for its specific function while maintaining overall compactness, resolving the contradiction between measurement precision and device size.
Solution Approach 2:
The patent transitions from traditional three-dimensional Paul traps to a one-dimensional linear trap configuration. This dimensional reduction simplifies the trap structure, reduces device footprint, and enables continuous ion transport through the linear path, achieving compact size without sacrificing measurement precision.
2Reliability
If conventional ion traps are used to achieve stable ion trapping, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent employs periodic radiofrequency (RF) fields to create dynamic trapping potentials that stabilize ions without requiring continuous high power. The RF fields oscillate at specific frequencies to maintain trapping while consuming less average power than continuous DC fields, resolving the contradiction between trapping stability and power consumption.
Solution Approach 2:
The patent replaces traditional magnetic trapping mechanisms with electric field-based trapping using RF and DC electrodes. This substitution eliminates the need for bulky cryogenic magnetic systems, reducing both power consumption and device size while maintaining reliable ion confinement through carefully controlled electric potentials.
3Weight of stationary object
If compact ion traps are designed to reduce size, then device complexity is reduced, but trapping potential depth decreases
Solution Approach 1:
The patent applies different electrode configurations and voltage regimes to different regions of the linear trap. The trapping region uses specifically optimized electrode geometries and voltage potentials to create deep local potential wells, ensuring strong confinement despite the overall compact device size. This local optimization resolves the contradiction between compactness and trapping depth.
Solution Approach 2:
The patent uses composite electrode structures combining conductive and dielectric materials to enhance field confinement and increase effective trapping potential depth within a compact volume. The composite design allows for sharper field gradients and deeper potential wells without increasing device footprint, resolving the size-strength contradiction.
4Productivity
If linear ion trap configuration is used for continuous ion transport, then productivity is improved, but optical access is blocked
Solution Approach 1:
The linear trap is segmented into distinct functional zones with strategic spacing, allowing laser beams to access ions in the cooling and detection regions without being blocked by electrodes in the trapping region. This spatial segmentation resolves the contradiction between continuous transport capability and optical access by assigning different functions to different spatial locations.
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 ion trap achieves low trap noise, high trapping potential, and excellent optical access, allowing for continuous ion recirculation and improved performance in miniature atomic instruments, quantum computing, and mass spectrometry without the need for cryogenic operation.
Implementation Method 1
using a combination of RF and DC fields to maintain a deep trapping potential
Implementation Method 2
laser cooling
Implementation Method 3
The linear trap includes a plurality of control electrodes, such as segmented DC electrodes and/or RF electrodes, that may be used to control ions
Data Source
AI summary
The disclosed ion trap comprises a plurality of structurally continuous blades and a plurality of recessed control electrodes, wherein the plurality of structurally continuous blades includes at least two structurally continuous RF blades and at least two structurally continuous DC blades, wherein the recessed control electrodes are disposed on or within the structurally continuous blades, and wherein the ion trap is in a ring configuration. The ion trap enables fast readout of optical transitions using stationary laser beams and moving ions. This design fundamentally contrasts with traditional linear Paul traps that employ stationary ions and laser beams that are turned on or off. Because the RF and DC blades are structurally continuous, the trapping potential is continuous and harmonic. Instead of segmenting the blades as conventionally, segmented recessed control electrodes are utilized to reduce voltage noise that causes unwanted heating of the ions. Many benefits and commercial uses are described.