Real-time Fast Feedback Experiment enabled by a Customized FPGA-Based Control System

ORAL

Abstract

A quantum control system is crucial for precise and reliable quantum computations. We developed a customized FPGA-based control system with the quantum control processor at its core. The control processor is implemented as a RISC-V Rocket Core extended with the Quantum Instructon Set Architecture (QUASAR) co-processor. QUASAR facilitates quantum program execution for high control operation speed and future scalability enabling real-time feedback experiments. We previously demonstrated our custom control system on a Xilinx FPGA that can be used for various quantum experiments with a superconducting quantum information processor. Here we show a mid-circuit measurement experiment that allows extending the qubit's lifetime through fast real-time feedback.

*This work was supported by the Quantum Testbed Program of the Advanced Scientific Computing Research for Basic Energy Sciences program, Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

–

Publication: A. Butko et al., "Understanding Quantum Control Processor Capabilities and Limitations through Circuit Characterization," 2020 International Conference on Rebooting Computing (ICRC), 2020, pp. 66-75, doi: 10.1109/ICRC2020.2020.00011.

Presenters

  • Anastasiia Butko

    • Lawrence Berkeley National Laboratory

Authors

  • Anastasiia Butko

    • Lawrence Berkeley National Laboratory

  • Yilun Xu

    • Lawrence Berkeley National Laboratory

  • Gang Huang

    • Lawrence Berkeley National Laboratory

  • Ravi K Naik

    • Lawrence Berkeley National Laboratory

  • David I Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley
    • Lawrence Berkeley National Laboratory