Superconductive Passive Element Layout for Lower Dielectric Loss
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Solution Overview
Problem
Conventional superconductive passive elements, such as MKIDs and superconducting quantum bits, face challenges in achieving resonance Q-values beyond a few hundred thousand due to dielectric losses and substrate interactions, requiring complex cooling methods and chemical treatments, limiting their practical application.
Innovation Solution
The structure of the superconductive passive elements is redesigned with a first and second conductor part having a superconductor, where the outermost surfaces face each other, separated by a distance, minimizing dielectric loss and substrate interaction, and using high-quality superconducting films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If superconductive passive elements use conventional substrate-based structures, then manufacturing is simplified, but resonance Q-value is limited to a few hundred thousand due to dielectric losses and substrate interactions
Solution Approach 1:
The patent divides the superconductive passive element into multiple separate conductor parts (first conductor part and second conductor part) that are positioned in opposition to each other with their outermost surfaces facing. This segmentation eliminates the need for a single continuous substrate, thereby reducing dielectric losses and substrate interactions while achieving resonance Q-values exceeding one million.
Solution Approach 2:
The patent transitions from a conventional planar substrate-based structure to a three-dimensional configuration where conductor parts are positioned in opposition with spaced separation. This dimensional change allows the outermost surfaces of conductor parts to face each other across a gap, eliminating substrate contact and dramatically reducing dielectric losses.
2Measurement precision
If complex cooling methods are used to achieve higher resonance Q-values, then detection sensitivity improves, but device complexity and operational difficulty increase
Solution Approach 1:
The patent extracts the superconductive passive element from the conventional substrate environment and positions conductor parts in opposition with spaced separation. This extraction eliminates the source of dielectric losses and substrate interactions, enabling achievement of resonance Q-values over one million that improve detection sensitivity while allowing operation with simpler cooling methods.
3Manufacturing precision
If chemical treatments are applied to substrates to improve superconductor quality, then manufacturing precision improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent converts the harmful effect of substrate-based structures that cause dielectric losses into a beneficial configuration by positioning conductor parts in opposition with spaced separation. This configuration eliminates the need for chemical substrate treatments while achieving superior superconductor quality and resonance Q-values exceeding one million.
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 design significantly enhances the resonance Q-value, improves sensitivity, and allows operation with simpler cooling devices, enhancing the practicality and performance of superconductive devices.
Implementation Method 1
superconducting passive elements, such as resonant elements (hereinafter referred to as 'superconductive passive elements'), are known. Superconductive passive elements include those that use superconducting thin films formed on a substrate in a predetermined transmission line pattern, which are cooled down to allow the superconductor to transition to a superconducting state.
Data Source
AI summary
To reduce the loss of superconductive passive elements, the superconductive passive element of the embodiment of the present disclosure includes a first conductor part having a deposited superconductor and a second conductor part having a superconductor. Here, the first conductor part is separated from the second conductor part, the outermost surface of the superconductor deposited on the first conductor part being opposite the second conductor part. Preferably, the superconductor of the second conductor part is one that has been deposited, and the first conductor part and the second conductor part are arranged with their respective outermost surfaces facing each other and separated from each, as in the superconductive passive element. In an embodiment of the present disclosure, a method for manufacturing the above superconductive passive element is also provided.