FPGA-based electronic system for the control and readout of superconducting quantum processors
arXiv:2110.07965 · doi:10.1063/5.0085467
Abstract
Electronic systems for qubit control and measurement serve as a bridge between quantum programming language and quantum information processors. With the rapid development of superconducting quantum circuit (SQC) technology, synchronization in a large-scale system, low-latency execution, and low noise are required for electronic systems. Here, we present a field-programmable gate array (FPGA)-based electronic system with a distributed synchronous clock and trigger architecture. The system supports synchronous control of qubits with jitters of approximately 5 ps. We implement a real-time digital signal processing system in the FPGA, enabling precise timing control, arbitrary waveform generation, IQ demodulation for qubit state discrimination, and the generation of real-time qubit-state-dependent trigger signals for feedback/feedforward control. The hardware and firmware low-latency design reduces the feedback/feedforward latency of the electronic system to 125 ns, significantly less than the decoherence times of the qubit. Finally, we demonstrate the functionalities and low-noise performance of this system using a fluxonium quantum processor.
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Cited by in corpus (6)
- ICARUS-Q: Integrated Control and Readout Unit for Scalable Quantum Processors
- SQ-CARS: A Scalable Quantum Control and Readout System
- A many-channel FPGA control system
- Parametric phase modulation in superconducting circuits
- Distributed-HISQ: A Distributed Quantum Control Architecture
- An Open-Source Data Storage and Visualization Platform for Collaborative Qubit Control