A 22nm FD-SOI <1.2mW/Active-Qubit AWG-Free Cryo-CMOS Controller for Fluxonium Qubits

📋 论文概要

本文提出一种基于22nm FD-SOI工艺的低温CMOS控制器，用于Fluxonium量子比特，无需使用任意波形发生器（AWG），每个活跃量子比特功耗低于1.2mW。该设计解决了传统量子控制方案中AWG功耗高、体积大的问题，实现了高效、紧凑的低温控制。

💡 主要创新点

• 提出无AWG的低温CMOS控制器架构，直接生成所需波形，显著降低系统复杂度和功耗。
• 采用22nm FD-SOI技术，在低温环境下实现超低功耗（<1.2mW/活跃量子比特）操作。
• 针对Fluxonium量子比特设计专用控制电路，支持高频、高精度量子态操控。

🏷 关键词

📄 原文摘要

Google Quantum AI, Goleta, CA 1 2 Superconducting quantum processors are among the most advanced quantum computing technologies. Systems based on these devices have enabled post-classical computation [1] and proof-of-concept execution of quantum-error-correction protocols [2]. While other qubit technologies employ naturally-occurring quantum mechanical degrees of freedom to encode information, those used by superconducting qubits are defined at the circuit level. Today’s state-of-the-art superconducting quantum processors use transmon qubits, but these are just one of a rich set of superconducting qubits; in considering the system-level optimization of a large-scale quantum computer, alternative qubit topologies may prove advantageous. Here, we consider cryo-CMOS control of a fluxonium qubit, one of the most promising of emerging superconducting qubits. Figure 29.1.1 compares the transmon and fluxonium qubits. The transmon, realized by

👥 作者与机构

Loïck Le Guevel1, Chen Wang1, Joseph C. Bardin1,2

University of Massachusetts, Amherst, MA