A scalable FPGA platform for qubit readout and control

Readout and control of superconducting qubits requires high bandwidth signal generation, acquisition and processing, together with the possibility of implementing low latency feedback. These requirements are fulfilled in a new category of Field Programmable Gate Arrays (FPGA) designed for applications in software-defined radio. We adapted the Xilinx Zynq Ultrascale+ RFSoC hardware platform by implementing firmware for pulsed control and readout of qubit circuits. We have also implemented firmware for coherent multifrequency modulation and demodulation of continuous signals. Using the second Nyqvist band we perform direct digital synthesis and measurement at microwave frequencies, without analog mixers. With 8 analog input and 8 analog output channels, on-chip integration of DAC, ADC and FPGA, the RFSoC is a promising new platform for experiments with circuit QED.