Design of a gap tunable flux qubit with FastHenry  

作　　者：Naheed Akhtar 郑亚锐 Mudassar Nazir 吴玉林 邓辉 郑东宁 朱晓波 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2016年第12期179-182,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11374344,11404386,and 91321208);the National Basic Research Program of China(Grant No.2014CB921401);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB07010300)

摘　　要：In the preparations of superconducting qubits, circuit design is a vital process because the parameters and layout of the circuit not only determine the way we address the qubits, but also strongly affect the qubit coherence properties. One of the most important circuit parameters, which needs to be carefully designed, is the mutual inductance among different parts of a superconducting circuit. In this paper we demonstrate how to design a gap-tunable flux qubit by layout design and inductance extraction using a fast field solver FastHenry. The energy spectrum of the gap-tunable flux qubit shows that the measured parameters are close to the design values.In the preparations of superconducting qubits, circuit design is a vital process because the parameters and layout of the circuit not only determine the way we address the qubits, but also strongly affect the qubit coherence properties. One of the most important circuit parameters, which needs to be carefully designed, is the mutual inductance among different parts of a superconducting circuit. In this paper we demonstrate how to design a gap-tunable flux qubit by layout design and inductance extraction using a fast field solver FastHenry. The energy spectrum of the gap-tunable flux qubit shows that the measured parameters are close to the design values.

关 键 词：superconducting circuit Josephson junction flux qubit FastHenry 

分 类 号：O413[理学—理论物理]