Integrated Ferromagnetic Ion Traps for On-Chip Magnetic Gradients

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing atomic object confinement apparatuses face challenges in efficiently generating and integrating magnetic fields and gradients for manipulating quantum states of trapped atomic objects, particularly in quantum computing systems.

Innovation Solution

Integration of ferromagnetic films, including permanent magnets, within the confinement apparatus to generate magnetic fields and gradients, enabling motional mode coupling and manipulation of quantum states.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If ferromagnetic films are integrated into the confinement apparatus, then magnetic field generation efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvemagnetic field generation efficiencyVSAvoiddevice complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent combines the magnetic field generation function with the confinement apparatus structure by integrating ferromagnetic films directly into the device layers. This merging eliminates the need for separate magnetic field generation components, thereby improving efficiency while managing complexity through functional integration.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The ferromagnetic films serve multiple functions within the confinement apparatus, including generating magnetic fields, providing magnetic gradients, and potentially serving as structural layers. This multi-functionality improves overall device efficiency by having single components perform multiple roles rather than requiring dedicated separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Force

If permanent magnets are used to generate magnetic fields, then field strength is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvemagnetic field strengthVSAvoidmanufacturing precision
Core Design Contradiction:
ForceVSManufacturing precision

Solution Approach 1:

The patent employs permanent magnets with specific local properties (high remanence, appropriate coercivity) selected for their position and function within the device. Different regions may use different magnet materials or orientations to achieve the required local magnetic field characteristics, allowing high field strength while managing manufacturing tolerances through material selection rather than purely geometric precision.

Inventive Principle:
Principle #3Local quality

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

Enables efficient manipulation of quantum states in trapped atomic objects through integrated magnetic fields and gradients, enhancing the functionality of quantum computing systems.

Implementation Method 1

the at least one ferromagnetic film is configured to generate a quantization magnetic field that separates electronic states in a ground state manifold of magnetically-sensitive ions

Methodology Applied
Scientific EffectZeeman effect: Zeeman Effect

Implementation Method 2

the at least one ferromagnetic film configured to apply magnetic fields and magnetic field gradients to the one or more atomic objects

Methodology Applied
Scientific EffectMagnetic field interaction: Magnetic Field

Data Source

PatentUS20250248312A1Monolithically integrated remnant magnetic field and gradient generation in ion traps
Publication Date: 2025.07.31 QUANTINUUM LLC
  • US20250248312A1 patent drawing
  • US20250248312A1 patent drawing
  • US20250248312A1 patent drawing

AI summary

Various examples in accordance with the present disclosure provide a ferromagnet-integrated atomic object confinement apparatus. Some embodiments include a confinement region, a first layer of a plurality of layers comprising one or more electrodes configured to generate a confining potential configured to confine one or more atomic objects in the confinement region at an atomic object elevation associated with the confinement region, and at least one ferromagnetic film integrated with the plurality of layers, the at least one ferromagnetic film configured to apply magnetic fields and magnetic field gradients to the one or more atomic objects.