Superconducting Amplification Circuit Using Resistance-State Transition

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Solution Overview

Problem

Conventional signal amplifiers based on transistors are limited by leakage current, noise, switching speed, and thermal dissipation, necessitating the development of more efficient and effective amplification solutions.

Innovation Solution

The use of superconducting components in amplification circuits, where the superconductor transitions between a superconducting state with zero resistance and a non-superconducting state with non-zero resistance, allowing for enhanced amplification through transimpedance gain and voltage amplification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional transistors are used in signal amplifiers, then the device can operate at room temperature with simple cooling requirements, but the amplifier suffers from leakage current, noise, and thermal dissipation limitations

Engineering Contradiction:

Improvenoise and thermal dissipationVSAvoidoperating temperature requirement

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The patent changes the operating temperature parameter from room temperature to cryogenic temperatures (below the superconductor's critical temperature Tc). This parameter change enables the use of superconducting materials that exhibit zero electrical resistance and significantly reduced noise, directly addressing the harmful factors of thermal dissipation and noise while accepting the trade-off of requiring cryogenic cooling infrastructure

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite material structures combining superconducting materials (such as niobium, aluminum, or their alloys) with conventional electronic components. The superconducting materials provide low-noise, high-efficiency signal amplification characteristics, while the composite structure integrates these materials into functional amplifier circuits that can operate at cryogenic temperatures, resolving the contradiction between reduced noise and temperature requirements

Inventive Principle:

Principle #40Composite materials

2Power

If superconducting materials are used in amplification circuits, then transimpedance gain is significantly improved (100 to 10,000), but the circuit requires cryogenic temperatures to maintain superconducting state

Engineering Contradiction:

Improvetransimpedance gainVSAvoidoperating temperature

Core Design Contradiction:

PowerVSTemperature

Solution Approach 1:

The patent exploits the phase transition of superconducting materials from normal conducting state to superconducting state below their critical temperature Tc. This phase transition enables the material to exhibit zero electrical resistance and enhanced quantum effects, which are harnessed to achieve high transimpedance gain (100 to 10,000) in the amplification circuit, directly resolving the contradiction between improved power gain and temperature requirements

Inventive Principle:

Principle #36Phase transitions

Solution Approach 2:

The patent replaces conventional electronic amplification mechanisms with quantum mechanical effects inherent to superconducting materials. By utilizing phenomena such as Josephson effects and quantum tunneling in superconducting junctions, the system achieves high gain through quantum mechanical processes rather than classical electronic mechanisms, enabling superior performance at cryogenic temperatures

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If superconducting component is used with amplifier in feedback loop, then noise is reduced and amplification is enhanced, but the device complexity increases due to cryogenic infrastructure requirements

Engineering Contradiction:

Improvenoise reductionVSAvoidcryogenic infrastructure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the superconducting amplification component with the cryogenic cooling infrastructure into an integrated system. By combining the low-noise superconducting amplifier with the necessary temperature control mechanisms (such as dilution refrigerators or pulse tube coolers) into a unified device architecture, the system achieves noise reduction while managing the complexity of cryogenic requirements through integrated design rather than separate subsystems

Inventive Principle:

Principle #5Merging (Combining)

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 approach significantly improves the efficiency and effectiveness of signal amplification, offering transimpedance gains ranging from 100 to 10,000 and output voltages between 1 mV and 100 mV, while reducing noise and thermal issues associated with conventional amplifiers.

Implementation Method 1

Superconductors are materials capable of operating in a superconducting state with zero electrical resistance under particular conditions

Methodology Applied

Scientific EffectSuperconductivity: Superconductivity

Data Source

PatentUS20250150049A1Superconducting Amplification Circuit

Publication Date: 2025.05.08 PSIQUANTUM CORP

AI summary

The various embodiments described herein include methods, devices, and systems for fabricating and operating superconducting circuitry. An example amplification circuit includes a superconducting component, and an amplifier coupled in parallel with the superconducting component. An output of the amplifier comprises a voltage proportional to a ratio of a resistance of the superconducting component to an input resistance for the amplification circuit.