Single-Clock Microwave Control for Scalable Phase-Coherent Channels
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Solution Overview
Problem
Current phase-coherent microwave generators have limited scalability and are not cost-effective for large quantum computing systems, making it difficult to generate predictable phase information for multiple qubits while maintaining system simplicity and cost-effectiveness.
Innovation Solution
A control arrangement utilizing a single-clock source to distribute a high-frequency reference clock signal in a phase-coherent manner to multiple modules and channels, allowing for scalable and cost-effective generation of phase-coherent oscillating signals through phase-locked loops and upconversion, ensuring deterministic phase relations across channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-clock source is used to distribute reference signals to multiple modules and channels, then phase coherence and scalability are improved, but device complexity increases due to the distribution arrangements and phase-locked loops required
Solution Approach 1:
The system is divided into multiple independent modules, each containing multiple channels with phase-locked loops. Each module can be independently configured and scaled, allowing the system to maintain phase coherence across channels while managing complexity through modular segmentation. The single-clock source is distributed to multiple modules via distribution arrangements that provide reference signals to each module's phase-locked loops.
2Adaptability or versatility
If the number of coherent channels is increased to support more qubits, then quantum computing capability is improved, but cost and system complexity increase
Solution Approach 1:
The control arrangement uses a universal single-clock source that distributes reference signals to multiple modules and channels through phase-locked loops. This universal clock distribution system enables the same hardware infrastructure to support a scalable number of coherent channels, allowing the system to adapt to different quantum computing requirements without requiring separate clock sources for each channel.
Solution Approach 2:
The system employs phase-locked loops within each channel that can dynamically adjust their operation based on the reference clock signal. This dynamic capability allows each channel to maintain phase coherence while operating independently, enabling the system to scale the number of coherent channels as quantum computing requirements evolve without proportionally increasing overall system complexity.
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
Enables the generation of phase-coherent oscillating signals suitable for quantum computing systems with minimized phase noise, allowing for scalable and cost-effective expansion of channels, maintaining high coherence and predictability across multiple qubits.
Implementation Method 1
Each of the plurality of channels comprises a first phase-locked loop configured to upconvert the high-frequency reference clock signal for providing one of the plurality of phase-coherent oscillating signals
Implementation Method 2
a first distribution arrangement for distributing the high-frequency reference clock signal in a phase-coherent manner to the plurality of modules and, within each of the plurality of modules, a second distribution arrangement for distributing the high-frequency reference clock signal in a phase-coherent manner to the plurality of channels of the respective module
Data Source
AI summary
A control arrangement is disclosed for providing a plurality of phase-coherent oscillating signals. It comprises a reference clock signal arrangement for providing a high-frequency reference clock signal and a plurality of modules each comprising a plurality of channels for providing the plurality of phase-coherent oscillating signals.