Xiling: Cryo-CMOS 18-bit Dual-DAC Manipulator with 4.6μV Precision and 4.1nV/Hz0.5 Noise Co-Integrated with the Single Electron Transistor at 60mK

📋 论文概要

该论文提出了一款名为Xiling的低温CMOS双通道DAC操控器，实现了18位精度、4.6μV的电压分辨率和4.1nV/√Hz的噪声性能，并与单电子晶体管（SET）控制器协同集成，旨在解决大规模硅基自旋量子比特操控中的高精度和低噪声需求。

💡 主要创新点

• 首次在低温CMOS中实现18位双通道DAC与SET控制器的单片集成，支持大规模量子比特阵列的精确操控。
• 通过优化的电路架构和低温设计，在4.6μV精度下达到4.1nV/√Hz的超低噪声，显著提升量子比特操控的保真度。

🏷 关键词

📄 原文摘要

Southern University of Science and Technology, Shenzhen, China 3 Chengdu Data Automation System Technologies, Chengdu, China 1 2 Millions of physical quantum-bits (Qubits) are envisioned for a fault-tolerant quantum computer [1]. Compared with the superconducting Qubit or trapped-ions, the silicon spin Qubits are scaling friendly due to the compatibility with the advanced silicon process. Intel recently reveals the fabrication and 1.6K verification of hundreds of Si/SiGe quantum dots on a 300mm Si wafer [2]. In addition, through the Coulomb blockade, the single electron transistor (SET) controls the flow of the electron between the source and drain to a quantum dot built either by a single phosphorus atom on Silicon [3] or a Si/SiGe heterostructure [4] (Fig. 13.4.1). It plays an important role in the Elzerman readout of Si Qubit states [5]. In both of the Si Qubit and SET, the gate voltage sets the energy barrier for the manipulation

👥 作者与机构

Yingjie Li1, Yifei Zhang2, Haichuan Lin3, Cheng Wang1

University of Electronic Science and Technology of China, Chengdu, China