Local Heating Device for Superconducting Flux Bias Loop Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing superconducting flux bias circuits face limitations in controlling multiple biasing loops individually and simultaneously due to the need to adjust the temperature of the entire cryostat, which lacks locality and efficiency, and does not allow for local heating of specific loops to control superconductivity and magnetic fields effectively.
Innovation Solution
A method and device that form a superconducting flux bias circuit with a heating device thermally coupled to the biasing loop, enabling local heating of the loop without adjusting the cryostat temperature, allowing for individual and simultaneous control of superconductivity and magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the temperature of the entire cryostat is adjusted to control superconductivity of the biasing loop, then the superconductivity and magnetic field of the loop can be controlled, but the operation becomes inefficient and lacks locality when multiple loops need to be controlled individually
Solution Approach 1:
The patent divides the cryostat temperature control system into segmented, localized heating devices that can independently control specific biasing loops. Each heating device is thermally coupled to a specific loop region, allowing individual temperature adjustment without affecting other loops or the entire cryostat system.
Solution Approach 2:
The patent implements local quality by creating spatially differentiated thermal zones within the cryostat. Different regions (biasing loops) can have different temperatures simultaneously, with each region controlled by its own heating device. This allows local control of superconductivity in specific loops while maintaining superconductivity in others.
2Adaptability or versatility
If the temperature of the entire cryostat is adjusted to control superconductivity, then the magnetic field can be controlled, but the method lacks efficiency and cannot heat specific loops individually
Solution Approach 1:
The patent segments the temperature control functionality into separate heating devices, each dedicated to a specific biasing loop or region. This segmentation provides adaptability for individual loop control while simplifying the overall system architecture compared to global cryostat temperature adjustment.
Solution Approach 2:
The patent introduces heating devices as intermediary components between the control system and the biasing loops. These intermediaries provide localized thermal coupling, enabling precise control of individual loops without directly adjusting the entire cryostat temperature, thus simplifying the control mechanism.
3Productivity
If local heating devices are implemented to heat specific biasing loops, then individual and simultaneous control of multiple loops is enabled, but the device structure becomes more complex
Solution Approach 1:
The patent replaces the mechanical/cryogenic system of adjusting entire cryostat temperature with localized electromagnetic heating devices. This substitution enables rapid, independent control of multiple biasing loops simultaneously, dramatically improving productivity while the modular nature of the heating devices keeps structural complexity manageable.
Solution Approach 2:
The heating devices are designed with multi-functionality, serving both as temperature control mechanisms and as indicators of the thermal state of each biasing loop. This universality reduces the need for separate monitoring systems, thereby limiting the increase in device complexity while maintaining high productivity.
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 improves the fidelity and performance of flux-controlled qubit devices by enabling precise control of superconductivity and magnetic fields, enhancing the operational efficiency and accuracy of quantum devices.
Implementation Method 1
thermally coupling the heating device to the biasing loop
Implementation Method 2
control superconductivity of the biasing loop
Implementation Method 3
thermally coupling the heating device to the biasing loop
Implementation Method 4
control superconductivity of the biasing loop and a magnetic field of the biasing loop
Data Source
AI summary
Devices, systems, and/or methods that can facilitate local heating of a superconducting flux biasing loop are provided. According to an embodiment, a method can comprise forming on a substrate a biasing loop and a flux controlled qubit device of a superconducting flux bias circuit. The method can further comprise forming a heating device on the substrate to couple the heating device to the biasing loop.