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A Wideband Low-Power Cryogenic CMOS Circulator for Quantum Applications
首款全集成CMOS循环器,用于低温量子计算平台,具有宽带宽和低功耗特性。
6.5 GHz中心频率,28%分数带宽,2.2 dB插入损耗,2.4 dB噪声系数,18 dB隔离度,2.5 mW核心功耗
量子计算CMOS循环器低温电子学集成电路量子比特读出
▸创新点1:全集成CMOS循环器 - 首次实现完全集成的CMOS循环器,解决了传统离散器件体积庞大的问题,核心面积仅0.45 mm²,显著提升了量子计算系统的集成度和可扩展性。
▸创新点2:低温操作(4.2 K) - 电路在4.2 K低温环境下稳定工作,与量子比特操作温度匹配,实现了与量子计算平台的无缝集成,支持300 K至4.2 K的宽温范围操作。
▸创新点3:基于LC全通滤波器的被动架构 - 采用全被动LC全通滤波器设计,实现了28%的分数带宽和2.2 dB的插入损耗,功耗仅2.5 mW,相比现有技术带宽提升1.6倍且功耗最低。
▸创新点4:高性能指标 - 在6.5 GHz中心频率下实现18 dB的隔离度和2.4 dB的噪声系数,为多量子比特读出系统提供了高性价比的迷你aturization解决方案。
Abstract
Quantum computers require classical electronics to
ensure fault-tolerant operation. To address compactness and
scalability, it was proposed to implement such electronics as
integrated circuits operating at cryogenic temperatures close to
those at which quantum bits (qubits) operate. Circulators are
among the most common blocks used in the qubit readout chain,
but they are currently discrete devices with a bulky footprint,
thus preventing large-scale system integration. For this reason,
we presen