Superconducting FPGA Array Using Thermal Switching Logic Cells
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Solution Overview
Problem
Existing technologies lack efficient and effective methods for implementing programmable logical operations in electronic devices.
Innovation Solution
A superconducting component with alternating narrow and wide portions, thermally coupled to heat sources, which transition between superconducting and non-superconducting states to perform logical operations, and a programmable circuit using a multi-dimensional array of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used for implementing programmable logical operations, then device complexity is reduced, but productivity and efficiency are insufficient
Solution Approach 1:
The superconducting component is divided into multiple narrow portions and wide portions along its length. Each narrow portion can be independently controlled by a corresponding heat source, allowing selective transition between superconducting and non-superconducting states. This segmentation enables complex logical operations to be performed through combinations of simpler unit operations, thereby improving productivity without requiring a single overly complex device structure.
Solution Approach 2:
The invention employs dynamic control of the superconducting state through thermal coupling. By applying heat to specific narrow portions, the system can dynamically switch between superconducting and non-superconducting states during operation. This dynamic capability allows the same physical structure to perform different logical operations by changing its electrical state, improving productivity without increasing structural complexity.
2Reliability
If heat sources are electrically coupled to the superconductor, then electrical control is simplified, but thermal interference and reliability are worsened
Solution Approach 1:
The invention introduces wide portions as thermal intermediaries between the heat sources and the superconducting narrow portions. These wide portions act as thermal buffers that can absorb and distribute heat without causing immediate transitions in the narrow portions. This intermediary structure improves reliability by providing thermal stability while maintaining the ability to control superconducting states, without requiring direct electrical coupling that would compromise thermal management.
Solution Approach 2:
Different portions of the superconducting component have different thermal properties. The narrow portions are designed with lower thermal mass for rapid state transitions, while the wide portions have higher thermal mass for stability. This local differentiation of thermal quality allows the system to achieve both rapid response where needed and thermal stability where required, improving reliability without uniform structural complexity.
3Adaptability or versatility
If the superconductor is made larger to perform more logical operations, then functionality is improved, but size and manufacturing precision requirements increase
Solution Approach 1:
The superconducting component is segmented into repeating units of narrow and wide portions. This modular segmentation allows the component to be scaled in functionality by adding or removing units rather than increasing the size of individual units. Each segment can be manufactured with standard precision, and the overall versatility is achieved through the number and arrangement of segments, reducing the cumulative manufacturing precision requirements compared to a monolithic large-scale design.
Solution Approach 2:
The narrow portions serve multiple functions: they act as the active superconducting elements for logical operations, as thermal coupling points for heat sources, and as configurable switches that can be selectively activated. This multi-functionality reduces the need for additional specialized structures, allowing the component to achieve high adaptability with a relatively simple repeating pattern that can be manufactured with standard precision.
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 and effective programmable logical operations at cryogenic temperatures and nanoscale sizes, enhancing the performance and efficiency of logical circuitry.
Implementation Method 1
a plurality of heat sources, each heat source thermally coupled to a corresponding narrow portion such that heat from the heat source is transmitted to the corresponding narrow portion
Implementation Method 2
the superconducting component is configured such that in response to the transmitted heat the corresponding narrow portion transitions from a superconducting state to a non-superconducting state
Implementation Method 3
Superconductors are materials capable of operating in a superconducting state with zero electrical resistance under particular conditions
Data Source
AI summary
A programmable circuit includes a superconducting multi-dimensional array. The programmable circuit further includes a plurality of photon detectors coupled to respective portions of the superconducting multi-dimensional array, each photon detector configured to selectively provide input to a corresponding respective portion sufficient to transition the corresponding respective portion from a superconducting state to a non-superconducting state. The programmable circuit also includes one or more electrical terminals coupled to respective second portions of the superconducting multi-dimensional array.