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JSSC 2023第11期Data Converters28nmDAC

A Polar-Modulation-Based Cryogenic Transmon Qubit State Controller in 28 nm Bulk

一种基于极性调制的28纳米体CMOS低温超导量子比特控制器
28nm CMOS, 3.5K工作温度, 1 GS/s XY路径驱动器SFDR 40 dB, Z路径驱动器SFDR 48 dB, 每量子比特功耗13.7 mW
量子计算超导量子比特极性调制低温CMOS数字功率放大器
▸极性调制XY路径驱动器
▸电流导向DAC Z路径驱动器
▸注入锁定本地振荡器与恒定斜率数字时间转换器
Abstract
This article presents a cryogenic transmon qubit state controller integrated circuit (IC) working at a tem- perature of 3.5 K for superconducting quantum computing (QC) applications. The qubit state controller IC comprises a polar-modulation-based XY-path driver and a current-steering digital-to-analog converter (DAC)-based Z-path driver. To gen- erate the XY-path driving pulse with arbitrary envelopes in the frequency range of 4–6 GHz, a switched-capacitor digital power amplifier (DPA) is adopt