Quantum Feedback with Superconducting Qubits using FPGA- based Electronics
by
R110
B416
A typical measurement setup for superconducting qubits consists of arbitrary waveform generators, signal recorders and vector network analyzers. Although sufficient for simple experiments, its applicability is limited due to long data communication delays, poor scalability and static pulse sequences. A faster and more flexible solution for qubit
readout and control is FPGA-based custom hardware. It not only dramatically reduces costs and space requirements but also simplifies measurements and enables customized control schemes like quantum feedback where a low response time is critical.
A flexible FPGA-based platform for experiments with superconducting qubits is presented which also enables fast feedback loops to control qubits depending on their measured state. Thus, it provides the basis for experiments and algorithms like quantum error correction or active reset. We demonstrated arbitrary qubit rotations around X and Y axis and can perform all standard measurements for qubit characterization using the platform. Furthermore, we present experimental results on quantum feedback.