[16p-D215-1~16] 11.5 Junction and circuit fabrication process, digital applications

[16p-D215-11] Design of a variable output amplitude microwave generator for qubit manipulation using 1kA/cm² Josephson integrated circuit process

〇Shu Sasaki¹, Naoki Takeuchi², Yuki Yamanashi^1,2, Nobuyuki Yoshikawa^1,2 (1.Yokohama Natl. Univ., 2.IAS, Yokohama Natl. Univ.)

Keywords:quantum computer, quantum bit, SFQ circuit

Superconducting qubits are controlled in the 0 and 1 states by irradiating microwaves of appropriate time width and amplitude and unified phase at several GHz. We use SFQ circuits to design a variable output amplitude microwave generator that can be placed in the vicinity of superconducting qubits and provide suitable control for each qubit.In this study, we have designed a variable output amplitude microwave generator using the AIST 1kA/cm² Nb standard process and investigated low power consumption.