Microwave Package Design for Superconducting Quantum Processors

作     者：Sihao Huang Benjamin Lienhard Greg Calusine Antti Vepsäläinen Jochen Braumüller David K. Kim Alexander J. Melville Bethany M. Niedzielski Jonilyn L. Yoder Bharath Kannan Terry P. Orlando Simon Gustavsson William D. Oliver 

作者机构：Department of Physics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA MIT Lincoln Laboratory Lexington Massachusetts 02421 USA 

出 版 物：《PRX Quantum》 (PRX. Quantum.)

年 卷 期：2021年第2卷第2期

页      面：020306-020306页

核心收录：

基　　金：ARO [W911NF-18-1-0411] Office of the Director of National Intelligence (ODNI), Intelligence Advanced Research Projects Activity (IARPA) under Air Force [FA8721-05-C-0002] National Defense Science and Engineering Graduate Fellowship program 

主　　题：Quantum computation Quantum information with solid state qubits Superconducting qubits 

摘      要：Solid-state qubits with transition frequencies in the microwave regime, such as superconducting qubits, are at the forefront of quantum information processing. However, high-fidelity, simultaneous control of superconducting qubits at even a moderate scale remains a challenge, partly due to the complexities of packaging these devices. Here, we present an approach to microwave package design focusing on material choices, signal line engineering, and spurious mode suppression. We describe design guidelines validated using simulations and measurements used to develop a 24-port microwave package. Analyzing the qubit environment reveals no spurious modes up to 11 GHz. The material and geometric design choices enable the package to support qubits with lifetimes exceeding 350μs. The microwave package design guidelines presented here address many issues relevant for near-term quantum processors.