Fabrication and characterization of aluminum airbridges for superconducting microwave circuits

被引：107

作者：

Chen, Zijun ^{[1
]}

Megrant, A. ^{[1
,2
]}

Kelly, J. ^{[1
]}

Barends, R. ^{[1
]}

Bochmann, J. ^{[1
]}

Chen, Yu ^{[1
]}

Chiaro, B. ^{[1
]}

Dunsworth, A. ^{[1
]}

Jeffrey, E. ^{[1
]}

Mutus, J. Y. ^{[1
]}

O'Malley, P. J. J. ^{[1
]}

Neill, C. ^{[1
]}

Roushan, P. ^{[1
]}

Sank, D. ^{[1
]}

Vainsencher, A. ^{[1
]}

Wenner, J. ^{[1
]}

White, T. C. ^{[1
]}

Cleland, A. N. ^{[1
,3
]}

Martinis, John M. ^{[1
,3
]}

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Calif NanoSyst Inst, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 05期

关键词：

CPW;

D O I：

10.1063/1.4863745

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting microwave circuits based on coplanar waveguides (CPW) are susceptible to parasitic slotline modes which can lead to loss and decoherence. We motivate the use of superconducting airbridges as a reliable method for preventing the propagation of these modes. We describe the fabrication of these airbridges on superconducting resonators, which we use to measure the loss due to placing airbridges over CPW lines. We find that the additional loss at single photon levels is small, and decreases at higher drive powers. (C) 2014 AIP Publishing LLC.

引用

页数：4

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