Quantum Chip Event Registers for Crosstalk Compensation
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Solution Overview
Problem
Current quantum computing systems lack flexibility and efficiency in controlling qubits, particularly in handling multiple control electrodes and compensating for crosstalk effects, which limits their practical application and computing fidelity.
Innovation Solution
A quantum chip system is designed with each qubit corresponding to at least two event registers, allowing simultaneous control of multiple control electrodes and incorporating a compensation mechanism using null waveforms to prevent crosstalk, thereby enhancing operational flexibility and computing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single event register controls a qubit, then the device structure is simple, but the operational flexibility is limited
Solution Approach 1:
The control system is segmented into multiple event registers (at least two per qubit) that can independently store and execute control waveforms for different control electrodes. This segmentation allows each event register to handle specific operational tasks, thereby increasing operational flexibility without requiring complete redesign of the entire control architecture.
Solution Approach 2:
Each event register is designed with multi-functionality, capable of storing control waveforms for different control electrodes and executing different types of quantum operations. This universal design allows the same hardware structure to support diverse quantum computing operations, enhancing adaptability while maintaining structural efficiency.
2Measurement precision
If multiple control electrodes are used for qubit control, then the control precision is improved, but crosstalk effects increase
Solution Approach 1:
The system applies preliminary anti-action by designing event registers that can pre-coordinate control waveforms for multiple electrodes, anticipating and preventing crosstalk before it occurs. The control logic in each event register is configured to compensate for potential crosstalk effects by adjusting waveform timing and amplitude in advance, thereby maintaining high control precision while mitigating harmful interactions.
Solution Approach 2:
The event registers serve as intermediary control units that mediate between the control system and multiple control electrodes. Each event register processes and coordinates the control signals, acting as an intermediary that ensures precise timing and amplitude control while preventing direct harmful interactions between electrodes through intelligent signal management.
3Productivity
If multiple qubits are controlled simultaneously, then the computing efficiency is improved, but the error rate increases
Solution Approach 1:
The control of multiple qubits is segmented into independent event registers, with each register dedicated to controlling specific qubits or control electrodes. This segmentation isolates potential errors to individual registers, preventing error propagation across the entire system while maintaining the ability to execute multiple operations in parallel, thus preserving computing efficiency without sacrificing reliability.
Data Source
AI summary
Embodiments of the disclosure provide a quantum chip system, a quantum computing processing system and an electronic apparatus, wherein one quantum chip system includes at least one first qubit, each first qubit includes at least two control electrodes, and a first event register for controlling the control electrode, wherein each first event register is configured for storing a control signal of the control electrode, and each first qubit corresponds to at least two first event registers.