Direct Josephson coupling between superconducting flux qubits -: art. no. 020503

被引：49

作者：

Grajcar, M

Izmalkov, A

van der Ploeg, SHW

Linzen, S

Il'ichev, E

Wagner, T

Hübner, U

Meyer, HG

van den Brink, AM

Uchaikin, S

Zagoskin, AM

机构：

[1] Inst Phys High Technol, D-07702 Jena, Germany

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

[3] Staffordshire Univ, Moscow Phys Engn Inst, Moscow 115409, Russia

[4] Univ Twente, MESA Res Inst, NL-7500 AE Enschede, Netherlands

[5] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

[6] DWave Syst Inc, Vancouver, BC V6J 4Y3, Canada

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

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.72.020503

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have demonstrated strong antiferromagnetic coupling between two three-junction flux qubits based on a shared Josephson junction, and therefore not limited by the small inductances of the qubit loops. The coupling sign and magnitude were measured by coupling the system to a high-quality superconducting tank circuit. Design modifications allowing to continuously tune the coupling strength and/or make the coupling ferromagnetic are discussed.

引用

页数：4

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