Semiconductor Quantum Structures Preferential Tunneling Thin Oxide
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Solution Overview
Problem
Current quantum computers face challenges in scaling due to the large and costly nature of superconducting structures, difficulty in achieving low operating temperatures, and high noise levels, which hinder the efficient processing of quantum interactions and error correction.
Innovation Solution
A topological, scalable, and reprogrammable quantum computing machine is developed using quasi-unidimensional chord lines with localized energy levels controlled by classic electronics, featuring quantum dots and tunneling paths through thin oxide layers, allowing for preferential tunneling directions and enhanced interaction between particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If superconducting structures are used to build quantum computers, then quantum interactions can be processed, but the structures become large and costly
Solution Approach 1:
The patent replaces superconducting mechanical/electrical structures with semiconductor-based quantum structures that use tunneling through thin insulator layers. This substitution transitions from macroscopic superconducting circuits to microscopic semiconductor quantum dots and tunneling barriers, dramatically reducing structure size while maintaining quantum interaction capabilities
Solution Approach 2:
The patent changes the operating parameters from superconducting temperature requirements to standard semiconductor operating conditions. By using tunneling phenomena in semiconductor structures rather than superconductivity, the system can operate at higher temperatures and with standard semiconductor fabrication processes, reducing complexity and cost
2Reliability
If low operating temperatures are achieved for quantum computing, then quantum states are stabilized, but the difficulty of achieving and maintaining these temperatures increases
Solution Approach 1:
The patent changes the temperature parameter from cryogenic requirements to higher operating temperatures that are easier to achieve and maintain. By using semiconductor quantum structures with tunneling barriers instead of superconducting structures, the system can operate at temperatures that don't require complex cryogenic infrastructure
3Productivity
If noise levels are high in quantum computing systems, then quantum interactions can occur, but error correction becomes difficult
Solution Approach 1:
The patent replaces noisy superconducting circuit operations with controlled quantum tunneling processes in semiconductor structures. The tunneling phenomenon provides inherent quantum coherence and reduced decoherence, leading to lower noise levels and improved error correction efficiency while maintaining quantum interaction processing capability
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 solution enables efficient quantum computing by reducing noise, improving scalability, and allowing for precise control of quantum interactions at lower temperatures, enhancing the reliability and efficiency of quantum processing units.
Implementation Method 1
Semiconductor quantum structures using preferential tunneling through thin insulator layers
Data Source
AI summary
Novel and useful semiconductor structures using preferential tunneling through thin insulator layers. Semiconductor quantum structures are implemented using tunneling through a thin oxide layer. The quantum dots are fabricated with semiconductor wells, 3D fins or combinations thereof, while the tunneling path and any optional quantum transport path is implemented with gate layers. The oxide layer between the gate and the well is thin enough in the nanometer semiconductor processes to permit significant tunneling. Having a thin oxide layer on only one side of the well, while having thick oxide layers on all other sides, results in a preferential tunneling direction where tunneling is restricted to a small area resulting in aperture tunneling. The advantage being constraining quantum transport to a very narrow path, which can be approximated as unidimensional. In alternative embodiments, more than one preferential tunneling direction may be used. These techniques can be used in both planar and 3D (e.g., FinFET) semiconductor processes.