Design of a gap tunable flux qubit with FastHenry

doi:10.1088/1674-1056/25/12/120305

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.

Keywords: superconducting circuit Josephson junction flux qubit FastHenry

Received: 24 March 2016
Revised: 10 August 2016
Accepted manuscript online:

PACS:	03.67.Lx	(Quantum computation architectures and implementations)
	85.25.Cp	(Josephson devices)
	85.25.Dq	(Superconducting quantum interference devices (SQUIDs))

Fund:

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).

Corresponding Authors: Dongning Zheng, Xiaobo Zhu
E-mail: dzheng@iphy.ac.cn;xbzhu16@ustc.edu.cn

Cite this article:

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) Design of a gap tunable flux qubit with FastHenry 2016 Chin. Phys. B 25 120305

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