Composite Confinement Apparatus with Integrated Photonic Platform
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Solution Overview
Problem
Delivering laser beams to large-scale quantum computers is challenging due to low ion height, Rayleigh range, and the need for significant laser power, which limits the scalability and accuracy of ion traps in cryogenic and vacuum environments.
Innovation Solution
A composite confinement apparatus assembly integrates photonic components into the quantum computing system, where a photonic platform is secured to a confinement apparatus substrate using spacing structures, featuring optical sinks and conductive layers to manage and direct laser beams efficiently, reducing spatial requirements and improving beam alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laser beams are delivered to ions in a large-scale quantum computer, then quantum computing functions can be performed, but the low ion height and Rayleigh range limit the scalability and accuracy
Solution Approach 1:
The patent transitions from free-space laser propagation to integrated photonic circuit propagation. Laser beams are coupled into waveguides that confine and guide light along predefined paths on the chip, enabling precise delivery to ion locations in two- or three-dimensional arrays without the limitations of Rayleigh range and beam divergence in free space.
Solution Approach 2:
The patent introduces photonic circuits as an intermediary between the laser source and the ions. The photonic circuit includes waveguides that transport laser light from coupling regions to specific object locations, and optical elements that shape and direct the beams, thereby achieving precise beam delivery independent of distance.
2Power
If significant laser power is delivered to perform quantum computing functions, then gate operations can be executed, but the spatial requirements and system complexity increase
Solution Approach 1:
The patent merges the laser delivery system with the quantum processing platform by integrating photonic circuits directly onto the same substrate as the ion trap. This consolidation eliminates the need for separate, complex free-space optical alignment systems and reduces the overall spatial footprint while maintaining the required laser power delivery.
Solution Approach 2:
The photonic circuit platform serves multiple functions: it delivers laser beams for gate operations, provides optical confinement, enables precise positioning of beams at multiple object locations, and can be scaled to support two- or three-dimensional ion arrays. This multi-functionality reduces the need for separate specialized components.
3Quantity of substance
If laser beams are delivered to multiple object locations in arrays, then quantum computing operations can be performed, but the Rayleigh range limits the effective delivery distance
Solution Approach 1:
The patent uses waveguide-based photonic circuits that confine light in three dimensions, allowing beam delivery over distances much longer than the Rayleigh range would permit in free space. The waveguides guide light along predefined paths to multiple object locations in two- or three-dimensional arrays with precise spatial control.
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 configuration enables efficient and accurate delivery of manipulation signals to multiple object locations within the quantum computer, scaling with the size of the quantum object confinement apparatus and reducing the complexity of signal management systems, allowing for two- or three-dimensional arrays of object locations.
Implementation Method 1
the conductive layer is configured to be held at a fixed electric potential
Implementation Method 2
a surface of the conductive layer facing the quantum object confinement apparatus has an anti-reflecting property
Implementation Method 3
one or more photonic platform sink components configured to act as a respective optical sink configured to enable and/or facilitate removal of one or more undesired photons
Data Source
AI summary
A composite confinement apparatus assembly is provided. The composite confinement apparatus assembly includes a quantum object confinement apparatus and a photonic platform. The confinement apparatus includes one or more electrical components and is fabricated on a confinement apparatus substrate. The photonic platform includes one or more photonic components that are hosted by a photonic platform substrate. The photonic platform substrate is mechanically coupled to the confinement apparatus substrate to form the composite confinement apparatus assembly.