Method of Operating a Semiconductor Spin Qubit Quantum Computer

Simple SummaryContent extracted from patent full text and abstract with AI.

The patent describes a method and device for operating a quantum processor based on semiconductor spin qubits. It focuses on improving the reliability (fidelity) of qubit movement within the quantum processor by calibrating and adjusting the voltages applied to specific gate electrodes, and actively identifying locations that reduce fidelity. By fine-tuning the trajectory and control voltages, and potentially employing machine learning for calibration, the method ensures accurate manipulation, shuttling, and fault detection of qubits in a scalable, semiconductor-based quantum computing system.

Use CasesContent extracted from patent full text and abstract with AI.

• Enhanced control and error management in semiconductor spin qubit quantum computers.
• Automated calibration of quantum processors for research labs and commercial quantum computing providers.
• Fault diagnosis and compensation in large-scale quantum processors to enable reliable quantum algorithms.
• Optimization of qubit shuttling paths in scalable quantum chips for use in quantum information processing, cryptography, and simulation.

BenefitsContent extracted from patent full text and abstract with AI.

• Improves the reliability and fidelity of qubit operations within semiconductor quantum processors, addressing critical error sources.
• Supports scalable quantum computer architectures by mitigating the impact of defects and imperfections in chip fabrication.
• Enables automated and adaptive tuning, potentially with machine learning, reducing manual calibration efforts and increasing operational efficiency.
• Identifies and circumvents error-prone locations (fidelity-reducing loci), maintaining high-fidelity quantum operations.
• Facilitates the commercial viability and industrial manufacturing of quantum processors by leveraging established semiconductor technologies.

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Patent Abstract

A method of operating a quantum processor is disclosed comprising a plurality of gate electrodes arranged on a semiconductor heterostructure, wherein the plurality of gate electrodes is to be supplied with at least one voltage to perform at least one action on at least one qubit arranged in the semiconductor heterostructure.. The method comprises the steps of calibrating the at least one voltage V; determining at least one fidelity F of the quantum processor; analyzing at least one measurement relating to the determining of the fidelities F; identifying at least one fidelity-reducing locus; and adjusting the at least one voltage V.