Local Qubit Programming With On-Chip Memory and Analog Control
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Solution Overview
Problem
The scalability of quantum processors is limited by the complexity of qubit parameter control systems, requiring external communication with each individual qubit, which becomes impractical for large-scale quantum computers.
Innovation Solution
A scalable technique for local programming of quantum processor elements involves a memory administration system linked to programmable devices via communication conduits, where digital signals are converted to analog signals and administered directly to the qubits, reducing the need for external control and simplifying qubit parameter management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external communication lines are used to control each qubit parameter, then qubit parameter control is achieved, but system complexity increases and scalability is limited
Solution Approach 1:
Multiple qubit control functions are merged into a single quantum processor element. The patent integrates control over multiple qubit parameters (frequencies, phases, amplitudes) and multiple qubits into one unified element, eliminating the need for separate external control lines for each parameter and enabling scalable quantum computing systems
2Measurement precision
If external communication lines are used for each qubit, then precise parameter management is achieved, but the number of required communication lines increases exponentially
Solution Approach 1:
A single quantum processor element performs multiple control functions simultaneously. The element can control frequencies, phases, and amplitudes of multiple qubits using a unified control mechanism, making the system multi-functional and reducing the total number of communication lines required from exponential to linear or constant scaling
3Reliability
If traditional circuit model quantum computers are used, then quantum error correction can be implemented, but qubit coherence time must be extended thousands of times
Solution Approach 1:
The patent replaces the traditional circuit model approach with a novel quantum processor element that uses coupled quantum systems with different dynamics. This substitution allows for error correction without requiring extremely long qubit coherence times, as the new system architecture fundamentally changes how quantum operations and error correction are performed
Data Source
AI summary
Systems, methods and apparatus for a scalable quantum processor architecture. A quantum processor is locally programmable by providing a memory register with a signal embodying device control parameter(s), converting the signal to an analog signal; and administering the analog signal to one or more programmable devices.