Integrated Photonic Ion Trap Assembly for Precise Beam Delivery
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Solution Overview
Problem
Delivering laser beams to a large-scale quantum computer is challenging due to low ion height above the trap, Rayleigh range, and the amount of laser power required, which limits the scalability and accuracy of signal management systems in cryogenic and vacuum environments.
Innovation Solution
Incorporating optical elements into a composite confinement apparatus assembly, integrating photonic components with the confinement apparatus substrate, and using monolithic fabrication to ensure precise spacing and thermal matching, reducing spatial requirements and improving beam direction accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laser beams are delivered to ions in a trap, then quantum computing functions can be performed, but the low ion height above the trap and Rayleigh range limit the scalability and accuracy of signal management systems
Solution Approach 1:
The patent combines the photonic apparatus with the confinement apparatus substrate by integrating optical elements directly onto the substrate, creating a composite structure. This merging eliminates the need for separate, complex signal management systems while maintaining precise beam delivery to ions at low heights above the trap.
Solution Approach 2:
The patent uses spacer structures with controlled thickness to create precise three-dimensional positioning of optical elements relative to the confinement apparatus. By controlling the thickness parameter of spacers, the system achieves accurate beam direction in the vertical dimension while scaling to larger quantum computer configurations.
2Power
If laser power is increased to perform quantum computing functions, then manipulation accuracy improves, but the spatial requirements and cryogenic/vacuum chamber interactions increase
Solution Approach 1:
By integrating optical elements directly onto the confinement apparatus substrate, the patent reduces the spatial footprint of the signal management system. This allows high laser power to be delivered within a compact configuration that minimizes interactions with the cryogenic and vacuum chamber environments.
Solution Approach 2:
The patent places optical elements in specific locations on the substrate using spacer structures, optimizing the local delivery of laser power to ion locations. This localized approach delivers high power where needed while minimizing overall spatial requirements and chamber interactions.
3Adaptability or versatility
If optical elements are integrated onto the confinement apparatus substrate, then scalability improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses discrete spacer structures with controlled thickness to position optical elements on the substrate. This segmentation approach allows for scalable integration while maintaining precise spacing through controlled fabrication of individual spacer components, making the system adaptable to different quantum computer sizes.
Solution Approach 2:
The patent controls the thickness parameter of spacer structures to achieve precise positioning of optical elements. By fabricating spacers with specific thickness values, the system achieves the required manufacturing precision for scalable quantum computer configurations without compromising adaptability.
4Stability of the object's composition
If monolithic fabrication is used to integrate photonic components, then thermal matching improves, but device complexity increases
Solution Approach 1:
The patent integrates photonic components and confinement apparatus onto a common substrate using monolithic fabrication techniques. This merging ensures thermal matching between components by creating a unified thermal pathway, while the systematic integration approach manages fabrication complexity through standardized processes.
Data Source
AI summary
A method of fabricating a photonics apparatus for a composite confinement apparatus assembly is provided. The method includes segmenting a spacer substrate to form a plurality of spacer structures and bonding the plurality of spacer structures to a photonic platform substrate.