Switchable resonant coupling of flux qubits

被引：60

作者：

Grajcar, M. ^{[1
]}

Liu, Yu-xi

Nori, Franco

Zagoskin, A. M.

机构：

[1] RIKEN, Inst Phys & Chem Res, Frontier Res Syst, Wako, Saitama 3510198, Japan

[2] Comenius Univ, Dept Solid State Phys, SK-84248 Bratislava, Slovakia

[3] Univ Michigan, CSCS, Dept Phys, MCTP, Ann Arbor, MI 48109 USA

[4] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.74.172505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a coupling scheme where two or more flux qubits with different eigenfrequencies share Josephson junctions with a coupler loop devoid of its own quantum dynamics. Switchable two-qubit coupling is realized by tuning the frequency of the ac magnetic flux through the coupler to a combination frequency of two of the qubits. The coupling allows any or all of the qubits to be simultaneously at the degeneracy point and can change sign.

引用

页数：4

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