Adiabatic Quantum Flux Parametron (AQFP) logic is known as energy efficient superconductor circuits [1]. When compared to the state-of the-art CMOS technology, AQFP has high advantage in term of low power consumption. Up to now, lots of circuits are demonstrated by using AQFP. One potential application of AQFP is processors to control quantum computing systems. In this application the processor operates at the low temperature, and hence its low power consumption is essential. We are developing a superconductor microwave pulse generator to control qubit states. Figure 1 shows a block diagram of the system, which is composed of a superconductor microwave switch, a room temperature microwave generator, and a timing controller to control the on/off timing of the microwave switch. In this study, we design the timing controller by using the AQFP. The designed timing controller generates two trigger pulses, start and stop pulses, to the microwave switch at the timing designated by digital codes. The time resolution is determined by the clock frequency supplied to the controller, whose typical frequency is 5 GHz or less. We designed the timing controller with the time resolution of qubit and implemented it by using the AIST HSTP process. The latest test results will be shown in the presentation.

Keywords: Adiabatic Quantum Flux Parametron , timing controller