Flux qubit with a large loop size and tunable Josephson junctions

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	Flux qubit with a large loop size and tunable Josephson junctions
	Deng, H ; Yu, HF ; Xue, GM ; Tian, Y ; Ren, JK ; Wu, YL ; Huang, KQ ; Zhao, SP ; Zheng, DN
刊名	CHINESE PHYSICS B
	2012
卷号	21 期号:4
关键词	PERSISTENT-CURRENT QUBIT
ISSN号	1674-1056
通讯作者	Zheng, DN: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We present the design of a superconducting flux qubit with a large loop inductance. The large loop inductance is desirable for coupling between qubits. The loop is configured into a gradiometer form that could reduce the interference from environmental magnetic noise. A combined Josephson junction, i.e., a DC-SQUID is used to replace the small Josephson junction in the usual 3-JJ (Josephaon junction) flux qubit, leading to a tunable energy gap by using an independent external flux line. We perform numerical calculations to investigate the dependence of the energy gap on qubit parameters such as junction capacitance, critical current, loop inductance, and the ratio of junction energy between small and large junctions in the flux qubit. We suggest a range of values for the parameters.
收录类别	SCI
资助信息	National Basic Research Program of China [2011CBA00106, 2009CB929102]; National Natural Science Foundation of China [11104340, 11161130519, 10974243]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/38318]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Deng, H,Yu, HF,Xue, GM,et al. Flux qubit with a large loop size and tunable Josephson junctions[J]. CHINESE PHYSICS B,2012,21(4).
APA	Deng, H.,Yu, HF.,Xue, GM.,Tian, Y.,Ren, JK.,...&Zheng, DN.(2012).Flux qubit with a large loop size and tunable Josephson junctions.CHINESE PHYSICS B,21(4).
MLA	Deng, H,et al."Flux qubit with a large loop size and tunable Josephson junctions".CHINESE PHYSICS B 21.4(2012).