Quantum Processor Local Programming With Memory-Driven Qubit 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 high-capacity quantum computers managing a large number of qubits.
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 with each individual qubit is used for control, then qubit parameter control is achieved, but system complexity increases and scalability is limited
Solution Approach 1:
The patent introduces a memory administration system as an intermediary between external control and individual qubits. This system includes memory devices coupled to qubits through coupling devices, allowing control parameters to be stored locally in memory and administered to qubits without requiring direct external communication with each qubit. The intermediary memory system simplifies the control architecture while maintaining full qubit programmability.
Solution Approach 2:
The control system is segmented into separate functional components: memory administration system, memory devices, coupling devices, and qubits. Each component has a specific function, and the segmentation allows independent optimization and scaling. The memory administration system manages multiple memory devices that can be individually coupled to qubits, enabling scalable control without increasing overall system complexity.
2Adaptability or versatility
If external communication lines are provided for each qubit, then individual qubit control is enabled, but the number of communication lines becomes impractical for high-capacity quantum computers
Solution Approach 1:
The memory administration system serves multiple functions: storing control parameters, managing memory devices, facilitating coupling to qubits, and administering control signals. This multi-functional system replaces the need for separate dedicated communication lines for each qubit, as the memory administration system can service multiple qubits through the coupling devices, significantly reducing the total number of communication lines required.
Solution Approach 2:
Instead of providing unique communication infrastructure for each qubit, the system uses replicated memory devices that can be individually coupled to qubits. The memory administration system manages these replicated memory units, allowing control parameters to be copied and administered to multiple qubits through shared communication pathways, reducing the communication line burden.
3Productivity
If local programming with digital-to-analog conversion is implemented, then control communication is contained internally, but additional conversion components are required
Solution Approach 1:
The digital-to-analog conversion capability is implemented locally within the memory administration system and memory devices, rather than requiring external conversion for each qubit control operation. This local conversion capability allows the system to process and administer control parameters internally, improving control efficiency and containing communication within the quantum processor boundaries.
Solution Approach 2:
The digital-to-analog conversion function is merged with the memory administration and storage functions. The memory devices not only store control parameters but also perform digital-to-analog conversion, eliminating the need for separate conversion components and reducing overall system complexity while maintaining internal control capability.
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.