3D Superconducting Cavity Resonator Coherence
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Solution Overview
Problem
Superconducting devices face challenges in maintaining long coherence times and scalability due to sensitivity to material imperfections and limitations in implementing multi-qubit gates, particularly in conventional planar circuits.
Innovation Solution
The use of microelectronic fabrication techniques to create three-dimensional cavity resonators and electromagnetic shields from multiple substrates, which reduces material imperfections and enhances coherence times, allowing for scalable and efficient quantum information processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional planar circuits are used for superconducting qubits, then device complexity is reduced and ease of manufacture is improved, but coherence time is limited due to sensitivity to material imperfections
Solution Approach 1:
The patent transitions from conventional two-dimensional planar circuits to three-dimensional cavity resonator structures. By stacking multiple substrates with superconducting qubits and forming enclosed cavities, the system achieves improved coherence times by removing sensitivity to material imperfections while maintaining scalability through vertical integration rather than horizontal expansion.
Solution Approach 2:
The patent employs composite structures combining multiple substrate layers, superconducting materials, and cavity enclosures. This composite approach creates a protected environment for qubits that shields them from external noise and material defects, thereby extending coherence times without sacrificing manufacturability.
2Reliability
If three-dimensional cavity resonators are used to increase coherence times, then reliability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent divides the three-dimensional cavity structure into multiple discrete substrate layers that can be fabricated separately using conventional planar techniques. Each substrate contains specific qubit arrays, and the layers are subsequently stacked and interconnected to form the complete 3D cavity system, enabling modular manufacturing.
Solution Approach 2:
The patent performs preliminary fabrication of individual substrate layers with pre-positioned qubits and circuit elements using standard planar processes. These pre-fabricated layers are then assembled into the final 3D cavity structure, allowing complex three-dimensional functionality to be achieved through simplified sequential manufacturing steps.
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 increases coherence times and enables scalable quantum information processing by reducing sensitivity to material imperfections and improving noise shielding, making superconducting devices more viable for quantum computation.
Implementation Method 1
an enclosure formed from a superconducting material may shield components within the cavity from external electromagnetic noise
Implementation Method 2
superconducting devices formed from multiple substrates configured to exhibit quantum mechanical phenomena
Data Source
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AI summary
Some embodiments are directed to a device including multiple substrates comprising one or more troughs. The substrates are disposed such that the one or more troughs form at least one enclosure. At least one superconducting layer covers at least a portion of the at least one enclosure. Other embodiments are directed to a method for manufacturing a superconducting device. The method includes acts of forming at least one trough in at least a first substrate; covering at least a portion of the first substrate with a superconducting material; covering at least a portion of a second substrate with the superconducting material; and bonding the first substrate and the second substrate to form at least one enclosure comprising the at least one trough and the superconducting material.