中国物理B ›› 2016, Vol. 25 ›› Issue (12): 120305-120305.doi: 10.1088/1674-1056/25/12/120305

• GENERAL • 上一篇    下一篇

Design of a gap tunable flux qubit with FastHenry

Naheed Akhtar, Yarui Zheng(郑亚锐), Mudassar Nazir, Yulin Wu(吴玉林), Hui Deng(邓辉), Dongning Zheng(郑东宁), Xiaobo Zhu(朱晓波)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2016-03-24 修回日期:2016-08-10 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Dongning Zheng, Xiaobo Zhu E-mail:dzheng@iphy.ac.cn;xbzhu16@ustc.edu.cn
  • 基金资助:

    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), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB07010300).

Design of a gap tunable flux qubit with FastHenry

Naheed Akhtar, Yarui Zheng(郑亚锐), Mudassar Nazir, Yulin Wu(吴玉林), Hui Deng(邓辉), Dongning Zheng(郑东宁), Xiaobo Zhu(朱晓波)   

  1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-03-24 Revised:2016-08-10 Online:2016-12-05 Published:2016-12-05
  • Contact: Dongning Zheng, Xiaobo Zhu E-mail:dzheng@iphy.ac.cn;xbzhu16@ustc.edu.cn
  • Supported by:

    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), and 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.

关键词: superconducting circuit, Josephson junction, flux qubit, FastHenry

Abstract:

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.

Key words: superconducting circuit, Josephson junction, flux qubit, FastHenry

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
85.25.Cp (Josephson devices) 85.25.Dq (Superconducting quantum interference devices (SQUIDs))